大学英语一级水平试卷(4)
Part I Listening Comprehension:
Section A
Directions: In this section you will hear 10 short conversations. At the end of each conversation, a question will be asked. Both the conversation and the question will be spoken only once. After each question there will be a pause. During the pause, you must read the four choices marked A),B),C) and D), and decide which is the best answer. Then mark the corresponding letter on the Answer Sheet with a single line through the center.
1. A) Five. B) Ten. C) Fifteen. D) twenty.
2. A) He is meeting his friend. B) He is seeing his friend off.
C) He is waiting for the train. D) He is complaining about the train.
3. A) Stop working. B) Stop disturbing. C) Stop talking. D) Stop complaining.
4. A) The date of engagement. B) The date to give classes.
C) The date to discuss questions. D) The date to make a decision.
5. A) She was angry. B) His apology is unnecessary.
C) He is not forgiven. D) She will believe no excuse.
6. A) She will go for dinner. B) She will work late.
C) She’s going to have a walk. D) She will ask the man to dinner.
7. A) Next morning. B) About noon. C) Late afternoon. D) At night.
8. A) It was raining a little. B) It was raining even harder.
C) It was cloudy. D) It was fine.
9. A) Potatoes. B) Baked beans. C) Sugar. D) Fruit.
10. A) The man spent it. B) The man deposited it in the bank.
C) The man lost it. D) The man had it robbed of.
Section B
Directions: In this section you will hear a passage three times. When the passage is read for the first time, you should listen carefully for its general idea. When the passage is read for the second time, you are required to fill in the blanks numbered from S1 to S7 with the exact words you have heard. For blanks numbered from S8 to S10 you are required to fill in the missing information. You can either use the exact words you have just heard or write down the main point in your own words. Finally, when the passage is read for the third time, you should check what you have written.
There is a lot of oil in the 11 of the North Sea. Whose is the North Sea?
Twenty-two countries have accepted the Geneva 12 of 1958. They have accepted that countries own the 13 (oil, metal, etc.) in the seabed along their coast. So the Netherlands’, Denmark’s, Germany’s and Norway’s.
Looking for oil 14 a lot of money; for example, a drilling platform costs about ￡10 15 , and it costs about ￡1 million to drill a deep 16 in the seabed. A Norwegian platform near the Shetlands 17 on the seabed. Its legs are about 150 metres long.
Drilling for oil costs money. 18 .
Working and living is hard on a drilling platform. 19 . In winter the sea temperature is about 4oC and the air temperature is below 0oC. 20 .
Part II Reading Comprehension:
Direction: There are four reading passages in this part. Each passage is followed by some questions or unfinished statements. For each of them there are four choices marked A), B), C), and D). You should decide on the best choice and mark the corresponding letter on the Answer Sheet with a single line through the center.
Question 21 to 25 are based on the following passage:
In everyday usage ‘hot’ means ‘having a lot of heat.’ Many people think that ‘cold’ is something completely separated from heat. But this is not true. ‘Cold’ simply means ‘having very little heat.’
Your life depends on heat. In fact, every living thing depends on it. Without heat, every living thing would be frozen to death. All living things get their heat from the sun, which provides the conditions in which life is possible.
Since before the dawn of history, man has been able to make his own heat: He has been able to release the sun's heat that is trapped in things such as wood, coal, and oil. And he has been able to use this heat.
Heat has made civilization possible. With heat, man could melt metals. As man learned to use metals and fuels, industries grew. As a result, engines were invented. These axe machines that change heat energy into mechanical energy. Engine can do the work of many men. Without engines industrial civilization is impossible.
Yet when the first engines were built in the 17th century, men were still wondering about the nature of heat. "What is it?' they asked. Not until the early years of the 19th century did they find the right answer.
21. In everyday usage, ‘hot’ means _____.
A) the weather is fine and it is in summer C) having a great deal of heat
B) one has a temperature D) having very little heat
22. Your life depends on heat. The sentence means _____.
A) in the cold season human beings will die
B) one usually builds his life on fire
C) the more heat one has, the better
D) it is impossible for man to live without heat
23. He has been able to release the sun's heat that is trapped in things such as wood, coat, and oil.
From this sentence we know _____.
A) man can get heat from things like wood, coal, and oil
B) man cannot get the heat directly from the sun
C) only wood, coal and, oil have heat
D) all the sun's heat is trapped in things
24. Which of the following is true?
A) Without engines civilization is impossible.
B) Without engines we have no industrial civilization.
C) Engines came before civilization.
D) Engines came before man knew how to use heat.
25. From the last two sentences, we can see _____.
A) men have never found the nature of heat
B) men found the nature of heat in the 17th century
C) men found the nature of heat in the 19th century
D) men found the nature of heat before the 19th century
Questions 26 to 30 are based on the following passage:
The theater is like a stadium: its rows upon rows of tiered seats, holding over 15,000 excited spectators, encircle the huge stage upon which every pair of eyes is focused.
On this stage two men are fighting to the death. This is a play, and the two men who are fighting have roles in the play; but the script calls for one of them to die, and the spectators, accustomed to seeing actual death in gladiatorial contests, will not be cheated with mere imitation. The actor who is to die knows it; beneath his mask he is perspiring with fright, his body is trembling. Any attempt to escape would be punished not only by death, but by torture as well. The audience is urging the fighters on, licking its lips in expectation of the kill.
The fight reaches a climax;, the. despairing slave meets his destined death giving one last shiver of agony as his blood stains the stage. The audience sighs with pleasure and then forgets him.
That was the theatre of Rome in its decline.
26. Apparently, the theater was much like a _____.
A) convention hall
B) gymnasium
C) football stadium
D) modern cinema
27. We are told that the spectators "will not be cheated with mere imitation". This means that _____.
A) the spectators know that the actor is not really dead
B) one of the actors must actually die
C) the actor must be good enough to make the audience believe he is dead
D) the actor's death is "real" only in the script of the play
28. The aim of the writer is to show his readers _____.
A) that Roman actors didn't care whether they lived or died
B) the evils of slavery in Rome during the final years of the empire
C) how the cruel and inhuman behaviour in the Roman theater reflected what was
happening in Roman society
D) how it is possible to present a play in such a way that the audience believes that what it
sees is really happening
29. The audience is _____.
A) sympathetic
B) despairing
C) shocked
D) bloodthirsty
30. The fight comes to its climax when _____.
A) every pair of eyes is focused on the stage
B) one of the combatants is mortally wounded
C) the excited audience is urging the fighters on
D) the combatants are perspiring with fright
Questions 31 to 35 are based on the following passage:
The Leaning Tower of Pisa has defied ()the laws of gravity for seven and a half centuries. Every year, on June 19th, a professor from the University of Pisa climbs to the bell tower and measures the increase in the slant with special instruments. And every year the professor makes the same report: the tower has leaned a fraction of an inch more. Last summer, the 125 foot-high tower was leaning an incredible 15 feet out of line. Scientists say that unless a way is found to stop the tilt, the tower will collapse in less than 80 years.
The tower is leaning because the soft subsoil of Pisa will not support it. Its foundation is sinking into the soil at an angle, causing the tower to lean. Since a tremor could shake the foundation loose, the ringing of the tower's bells was forbidden in 1959. Trucks are not allowed to pass in the neighborhood of the tower for this same reason.
31. This passage is mainly about _____.
A. the history of Pisa's tilt C. a tower that leans
B, the cause of the tower's tilt D. a plan for saving the tower
32. The statement which best expresses the main idea of this passage is that _____.
A. the Leaning Tower of Pisa is in increasing danger of collapsing
B. every year a professor measures the increase in the tower’s slant
C. the tower is leaning because the subsoil of Pisa will not support it
D. there is only one way to save the Leaning Tower of Pisa
33. It can be inferred from the passage that last summer the tower was found tilted further by
A. 15 feet C. more than one inch
B. a fraction of an inch D. several inches
34. Why is the tower described as defying the laws of gravity?
A. It had resisted shaking tremors for hundreds of years before 1955.
B. It was built on soft ground.
C. It leans a fraction of an inch more every year.
D. Scientists think that it should have collapsed long ago.
35. Truck traffic has been forbidden in the neighborhood of the tower _____.
A. to protect the drivers C as a precaution against shaking tremors
B. to prevent accidents D. because trucks damage the foundation
Questions 36 to 40 are based on the following passage:
In. this small town there was not a single man of importance who would dare to have a housekeeper younger than sixty, for fear of what people might say about them. I was an exception, however. When I needed a housekeeper 1 chose a girl called Bridie Casey, a lovely little girl of seventeen from a village up the coast. But I made my choice carefully. I drove out there one day when she was at home, and I had a look at the: cottage and a talk with her mother and a cup of tea, and after that I did not need anyone to recommend her. I knew that if there was anything Bridie did not do properly her mother would not take long to correct her. After that, there was only one inquiry to make.
"Have you a boy-friend. Bridie?' said I.
"No, Doctor, I have not,” said she with a simple expression that did not deceive me a bit. As
a doct6r you soon get used to innocent looks.
“Well, you'd better hurry up and get one,” said I, “or I'm not going to take you."
At this she laughed.
The next day she started working at my house. She proved to be very capable and efficient. Of course, she was so good-looking that people who came to my house used to pass remarks about us. But that was only jealousy. They did not dare to employ a pretty girl themselves for fear of what people would say. But I knew that as long as a girl had a man of her own to look after, she would give me no trouble.
36. From the passage we can infer that the writer _____.
A) would dare not have a housekeeper younger than sixty
B) feared of what people might say about younger housekeepers
C) would teach the girl how to do properly
D) took the girl home
37, According to the passage, the writer
A) was quite different from other important people. C) liked good-looking girls.
B) was similar to other important people. D) was very afraid of public opinion.
38. Which of the following can be inferred from the passage?
A) the writer was a shy man. C) the cottage was big
B) the girl was brave. D) the mother was good at teaching her daughter.
39. When did the girl begin m have a boy friend?
A) soon after the doctor talked to her. C) after she started working for the doctor.
B) before {he doctor, talked: to her D} it is not known at all when the girl go a boy friend.
40. The doctor was satisfied with the girl because _____.
A) she was pretty B) she could do the job well
C) she had a boy friend D) Both B and C
Part III Vocabulary and Structure
Direction: There are 30 incomplete sentences in this part. For each sentence there are four choices marked A), B), C), and D). Choose the ONE answer that best completes the sentence. Then mark the corresponding letter on the Answer Sheet with a single line through the center.
41. _____ her health is much improved, but she still must stay in bed for another three days.
A) In a way B) In one way C) In this way D) In any way
42. Although I had explained the sentence word by word, she still _____ puzzled.
A) pretended B) became C) managed D) remained
43. Hand in hand with reading, he had _____ the habit of making notes
A) observed B) encouraged C) developed D) rejected
44. The lake is _____ that river.
A) twice the width than B) twice the wide than C) twice more than D) twice the width of
45. Before testing this method on patients. Dr. Smith _____ tests for two years on three hundred
dogs.
A) brought about B) went after C) kept on D) carried out
46. In _____ of all his riches, he is never contended.
A) face B) spite C) hope D) search
47. She agreed _____ to take part in the game.
A) on occasions B) in return C) with reluctance D) by mistake
48. This is a rather _____ word, one does not often see it or use it.
A) rare B) solid C) hard D) empty
49. It took several hours to get the hall _____ the school dance.
A) full of B) equal to C) busy with D) ready for
50. The paint is still wet. _____.
A) Be sure not touch it B) Be sure not to touch it
C) don’t be sure to touch it D) Be not sure touch it
51. Going to the movies is the most popular _____ in the nation.
A) interest B) desire C) pastime D) enjoyment
52. _____ the problem seems insoluble.
A) In effect B) On second thought C) Without doubt D) At first glance
53. The moon _____, they went to the field.
A) was rising B) rose C) had risen D) having risen
54. You _____ me about your decision a week ago.
A) must tell B) ought to have told C) ought to tell D) had told
55. The time is _____ when Eliot has to leave for school.
A) coming again B) drawing near C) getting ahead D) falling away
56. He _____ the letter carefully before putting it in the envelope.
A) answered B) delivered C) registered D) folded
57. We are _____ about being unable to complete the task in time.
A) doubtful B) worried C) curious D) serious
58. He is unable to go to work _____ the fall from his horse.
A) with a view to B) on behalf of C) as a result of D) in line with
59. I let him run on, without any _____ to interrupt him.
A) instruction B) attempt C) evidence D) excuse
60. Are you _____ that you heard him shouting after midnight.
A) determined B) surprised C) positive D) serious
61. Nearly sixty percent of television viewers chose Philip Steward as their _____ actor.
A) popular B) favorite C) superior D) advanced
62. _____ that you are not late again.
A) See B) Make C) Suppose D) Provide
63. Have you been in _____ with your sister recently?
A) agreement B) comparison C) doubt D) contact
64. They will be very happy, for they have much in_____.
A) quantity B) plenty C) number D) common
65. His speech had a great impact _____ the audience.
A) to B) on C) at D) for
66. The boy accidentally _____ the bottle.
A) knocked up B) knocked out C) knocked over D) knocked about
67. At first I was of the _____ that you were decidedly right.
A) opinion B) thoughts C) interest D) fancy
68. He had to _____ off an appointment with me on account of illness.
A) put B) set C) cut D) kept
69. I’ve got up early all my life, and it hasn’t any done.
A) result B) effect C) reaction D) harm
70. He felt _____ for her sufferings.
A) passion B) sympathy C) confidence D) dislike
Part IV Cloze:
Direction:There are 20 blanks in the following passage. For each blank there are four choices marked A), B), C), and D) on the right side of the paper. You should choose the ONE that best fits into the passage. Then mark the corresponding letter on the Answer Sheet with a single line through the center.
Princeton New Jersey, is a small quiet town of family homes, even though it does have a world-famous university. It is not a place 71 anyone would expect to see 72 characters on the streets.
73 day in 1940, a little girl in 74 saw a funny-looking man 75 towards her. His white hair was wild and 76 to be standing straight out. His 77 were much too big and seemed to have 78 pulled on like a blanket 79 him. He was short, had a big nose and deep-set eyes. He was 80 looking anywhere. It was 81 that he was thinking deeply. He almost 82 into the girl before he 83 her. He smiled at her, then walked on and went on 84 . The girl turned around to get 85 look at the strange old man. She noticed that he was wearing his 86 slippers.
That night 87 dinner, the girl told her family about the strange, funny man she had seen. 'He was almost 88 a character out of a fairy story, ' she exclaimed. 89 her surprise, her father put 90 his knife and fork, looked at her, then said, 'My child, remember this: today you saw one of the greatest men in the world.'
The 'strange character' was Albert Einstein, the world-famous scientist.
71. A) that B) Where C) which D) but
72. A) good B) kind C) bad D) strange
73. A) Some B) A C) That D) One
74. A) Princeton B) New Jersey C) street D) town
75. A) go B) coming C) to run D) moved
76. A) was B) liked C) seemed D) confused
77. A) ears B) clothes Hands D) feet
78. A) not B) just C) never D) been
79. A) over B) in C) beside D) under
80. A) always B) then C) sometimes D) not
81. A) clearly B) clear C) he D) there
82. A) went B) knocked C) ran D) thought
83. A) talked B) told C) saw D) greeted
84. A) thinking B) smiling C) looking D) saying
85. A) one B) more C) good D) another
86. A) father’s B) mother’s C) sleeping D) bedroom
87. A) before B) after C) at D) in
88. A) probably B) like C) as D) terribly
89. A) To B) On C) By D) Seeing
90. A) down B) away C) up D) off
Part VI: Writing
Directions: For this part, you are allowed thirty minutes to write a composition on the topic “Natural Calamities ”. You should write at least 120 words, and base your composition on the outline given in Chinese bellow:
1． 人类遭受着各种各样的自然灾害。
2． 这些灾害给人类带来了巨大的损失和破坏。
3, 人们已在竭力与这些自然灾害作斗争。
二.大学英语一级水平试卷(4)答案
Scripts and Key
Part I Listening Comprehension:
Section A Conversations:
1. W: How much is this new jacket?
M: Fifteen dollars without including five dollars cut down by the shop-assistant.
Q: How much is its original price? (D)
2. W: What do you think of the news?
M: I did take it, but it was thirty minutes behind the timetable.
Q: Why does the man stay in the station? (C)
3. W: Can you get off the phone? You know you disturb me for such a long time.
M: I know. I know you should talk to me
Q: What does the woman want the man to do? (A)
4. W: could you tell me when you will make up for the class, this Friday morning or the next?
M: Either time is all right. Just let me know if you decided.
Q: What are they talking about? (B)
5. W: Please forgive me for having lost your letter.
M: There’s no reason to apologize for such a small thing.
Q: What does the woman want the man to know? (B)
6. M: I wonder if you’d like to come round for dinner tonight?
W: I’d love to. But I am sorry I have to work late tonight.
Q: What will the woman most probably do tonight? (B)
7. M: What did you do there?
W: We had a picnic in the warm sunshine. When we got back, it was getting dark.
Q: When did the picnic people come back? (C)
8. W: Did you enjoy the trip?
M: Oh yes. It was raining a little when we left London, but the sun was shining when we got
to the forest.
Q: What was the weather like when they arrived at the forest? (D)
9. W: I thought potatoes and baked beans made one fat.
M: No, it’s sweet things that make one fat. We should eat less fat and less sugar and more fruit.
Q: What should one eat less in order to keep slim? (C)
10. W: Where is your $1,000?
M: I just left it on the bank counter for a moment and then it suddenly disappeared.
Q: What happened to the money? (C)
Section B
There is a lot of oil in the (11.) seabed of the North Sea. Whose is the North Sea?
Twenty-two countries have accepted the Geneva (12.)agreement of 1958. They have accepted that countries own the (13.)minerals (oil, metal, etc.) in the seabed along their coast. So the Netherlands’, Denmark’s, Germany’s and Norway’s.
Looking for oil (14.)costs a lot of money; for example, a drilling platform costs about ￡10 (15.)million, and it costs about ￡1 million to drill a deep (16.)hole in the seabed. A Norwegian platform near the Shetlands (17.)stands on the seabed. Its legs are about 150 metres long.
Drilling for oil costs money. (18.)It also costs lives; in 1975, nine men died under water.
Working and living is hard on a drilling platform. (19.)Sometimes the waves are 20 metres high and the winds 200 kph. In winter the sea temperature is about 4oC and the air temperature is below 0oC. (20.)bad weather can stop work for many weeks.
Part II Reading Comprehension:
21.C) 阅读中注意同义词的替代。题目中a great deal of就是文章的第一句的a lot of。
22.D) 第二段第一句说：“我们的生活依赖热能”与D)的答案是一致的。
23.A) 第三段的第二句的定语从句说明：人类已能运用储存在木材、煤炭和石油中的太阳能。
24.B) 第四段最后一句说明没有发动机，工业化是不可能的。
25.C) 最后一段的最后一句是一个倒装句，强调until的从句，意思是：直到十九世纪人类
才找到了正确的答案。根据前一句，我们知道答案就是热能的性质。
26.C) 第一段的第一句就表示：剧场像运动场的意思。
27.B) 第二段第二句的but后面意思是：剧本要求他们中的一个人去死，而且观众习惯于在
格斗中看到真实的死，他们不会被纯粹的模仿所骗。所以B)是正确的。
28.B) 这是主旨题。从最后一句中我们了解是罗马帝国的衰退时期，全文看作者要揭示奴隶
制度的罪恶。因此，答案应当是B)。
29.D) 从第三段中我们可以看出：这些观众是怀着愉快、满足的心情来看待斗士们的杀戮。
30.B) 第三段第一句说：打斗高潮的时候，就是绝望的奴隶血洒台上，即将死去的时候。
31.C) 文章第一句是主题句。这篇文章说的是有关比萨斜塔的事。斜塔的历史、倾斜的原因
以及拯救斜塔的计划都是一部分内容，不是全部。
32.A) 从全文看，文章主要讲的是比萨斜塔倒塌的危险在增加。
33.B) 从第一段的倒数第二、三句，我们可以看出B)是正确的答案。
34.D) 第一段的第一句说：斜塔违背重力规律已有七百五十年了。后面又说科学家年年去测
量。说明答案D)比较符合文章的意思。
35.C) 第二段的第三句说：由于震动会把地基震松…。由于同样的理由，卡车也被禁止从边
上经过。
36.D) 从最后一段的第一句，我们看到那个姑娘到他家里来工作了。上面有一句话：Well, you’d better hurry up and get one or I’m not going to take you.。所以D)是正确答案。
37.A) 从文章的第一、二句，我们可以看出：在这个小镇，单身的重要人物中没有人敢于请
六十岁以下的女子为管家，因为害怕人家讲他们。而我是例外。
38.D) 从第一段的倒数第二句，我们得知：如果她做不好，她的母亲会花很多时间来纠正她。
39.B) 从第三段中，看出：那姑娘嘴里说没有男朋友，但是表情骗不了我。说明那姑娘实际
上有男朋友。
40.D) 最后一段的第一句和最后一句说明：她很胜任，而且有男朋友，不会给我若麻烦。
Part III Vocabulary and Structure
41.A) in a way（在某种程度上），符合题意。而in this way用这种方法。In any way在任何情
况下。与题意不符。
42.D) remained仍然保持（迷惑不解）的状态。而became的意思是：原先不迷惑，现在变
得迷惑不解了。 Pretended意思是：装出来的（样子）。Managed指：对付，应付。做及物动词，后面只跟名词性词类。做不及物动词时，后面可以跟状语和不定式。
43.C) developed与habit搭配表示：养成一种习惯。其他不合题意。
44.D) twice the width of是典型的倍数表达法：倍数+名词+of。如：The earth is 49 times the size of the moon.地球是月球大小49倍。
45.D) carried out tests表示：进行试验。而brought about（导致，引起），went after（追逐，
追求），kept on（继续）均不符合题意。
46.B) in spite of表示：尽管。符合题意。而in hope of（期望着），in search of（为了寻找）
不符合题意。其中in face of（在…前面；不顾，纵然）是个干扰项，但有区别。如：He insisted he was right in face of facts that he was wrong.（他不顾那些证明自己错了的事实，硬说他是对的）。
47.C) with reluctance不情愿地。With加上表示情绪的名词，作用接近一个副词。
48.A) rare word生僻的字。Hard也可以和word搭配，但意思与后半句不符。
49.D) get sth ready是搭配，表示：把…准备好。符合题意。
50.B) be sure（对…肯定）后面可以跟of, about以及从句，如：I’m not sure whether I have a copy.
在口语中，后面还可以跟不定式，如：Be sure to write and give me all the news.当not放在sure之前，表示：不肯定；而放在sure之后，表示：肯定不…。因此，Be sure not to touch （务必不要碰它），符合题意。
51.C) pastime消遣，娱乐。符合题意。Interest兴趣，爱好，利息。Desire愿望，欲望。Enjoyment
享受，享乐，乐事。
52.D) At first glance乍一见。符合题意。而其余三项意思是：In effect实际上，事实上。On second thought经过重新考虑。 Without doubt无疑地。
53.D) 该句中间是逗号，又没有连接词，因此可以判断，前半句应当用分词的独立结构形式
比较妥当。因此，having risen符合题意。
54.B) 该句中时间状语是a week ago，因此，过去完成时态欠妥。而ought to have told表示：
本该告诉没有告诉。符合题意。
55.B) drawing near表示：（时间）临近。符合题意。其他意思是：come again再说一遍，get ahead
取得进步，fall away落下，抛开。
56.D) folded the letter折叠信笺，符合题意。而其他的意思是：answer回（信）deliver分送
（信笺）register（给信）挂号。
57.B) be worried about担心，发愁。符合题意。而其他的意思是：be doubtful 拿不准，be curious
好奇的，be serious严重的。
58.C) as a result of因此，结果。符合题意。而其他几项的意思是：with a view to为的是，目
的是，on behalf of代表，为…，in line with与…一致，按照。
59.B) attempt企图，尝试。符合题意。而其他几项的意思是：instruction指令，evidence证
据，excuse n. 借口，理由，v. 原谅。
60.C) positive确实的，肯定的。符合题意。而其他几项的意思是：determined决定，确定；surprised惊奇；serious严重的。
61.B) favorite特别喜爱的，符合题意。而其他几项的意思是：popular受欢迎的，superior比
较好的，advanced先进的，高级的。
62.A) See to it that务必使…，保证做到。符合题意。而suppose料想，猜想。Provide提供等，
与句意不符。
63.D) in contact with与…有接触。符合题意。而其他几项的意思是：in agreement with同意，
和…一致；in comparison with与…比较；in doubt感到怀疑的，拿不准的。
64.D) in common公用，有共同之处。符合题意。而其他几项的意思是：in quantity大量地，
大批地；in plenty充足，丰富；in number在数量上。
65.C) (have) impact on对…有影响，符合题意。名词impact与of搭配，表示：…的影响。
其他的搭配还没有。
66.A) knock over撞倒了…，符合题意。而其他几项的意思是：knocked up向上打，弄糟；knocked out击倒，使自己筋疲力尽；knocked about使颠簸。
67.A) be of the opinion that主张，认为，所以A) 符合题意。其他没有这种搭配。
68.A) put off推迟，符合题意。而其他几项的意思是：set off出发，引起；cut off切去，打
断…通话；kept off使不接近。
69.D) do sb harm是一个搭配。符合题意。也可以用do harm to sb。而其他各字与do搭配均
不行。
70.B) feel sympathy for sb同情某人。符合题意。有时也用have sympathy with sb。而其他几
项的意思是：passion热情，confidence信心，dislike不喜爱，厌恶。
Part IV Cloze:
71.B) 该句中where是关系代词，引导的是定语从句。因为从句中有宾语，所以Which和that
做关系代词均不妥当。而not和but搭配，表示：不是…而是…。
72.D) 根据后面的文章内容判断，填上strange“奇怪的人”比较妥当。
73.D) one day有一天，指过去的时间。而some day指：有朝一日，将来有一天。That day
那一天，因前面没有提到过，不妥。而a 是泛指的，表示一种，一类。
74.A) 此处是个地名，而且上面已经提到过。
75.B) 这个空挡是宾语补足语，是see sb doing的结构。
76.C) 根据后面的不定式，选seem较好，表示：（头发）似乎是竖着的。而be to do表示安
排好将要…。其他的意思都不妥。
77.B) 根据后面说的内容可以判断是“衣服”。
78.D) 上一句是衣服，那么这里应当是一个被动语态。
79.A) 句意是：像毯子一样盖在身上。所以其他介词都不妥。
80.D) 该句后面有anywhere，应当填一个否定词。
81.B) 这句是主语从句，缺一个表语。不是强调句型，因为that后面有主语he。
82.C) run into是动词搭配，表示：撞上。
83.C) 根据前面“差点撞上”的意思来看，这里用saw比较好。
84.A) 上面有一句thinking deeply，现在继续thinking，比较妥当。
85.D) to get another look表示：（回过头）再看一眼。
86.D) 根据上下文看，穿着“卧室的拖鞋”比较妥当。
87.C) 根据下文看，at dinner表示：在吃晚饭的时候，比较妥当。
88.B) 句意是：像个怪异小说里的人物。用as，表示：作为…人物。不妥当。
89.A) 句中to one’s surprise（令某人吃惊的是）是一个搭配。
90.A) 句意是：放下刀叉。而put away把…放在合适的地方；put up举起，搭建，提供膳宿；
put off脱去，推迟。
Part V: Writing
Natural Calamities
Man has been suffering from all kinds of natural calamities such as earthquakes, volcanoes, draughts, floods and forest fires. These natural calamities may happen anywhere at anytime, and one can hardly avoid them if they happen to occur at that time.
These natural calamities do great damages to man. An earthquake, for instance, may shake down buildings and make people homeless. And floods may wash away farmers' possessions and crops and sometimes even devour their lives. Forest fires are also a great disaster to man. They can destroy a whole forest together with a variety of animals, which play a very important role in maintaining natural balance.
However, man has been trying his best to fight against natural calamities. With the development of science and technology people can be warned before some natural calamities occur, so that they can make some preparations in advance. Furthermore, people build dams to restore water in case of draught and dig ditches to release water if there is a flood. Finally, people plant trees to reserve soil fertility and its moisture.
2020年上海电力学院电气工程学院考研调剂信息 一、接收调剂生专业及复试科目 招生类型 专业名称 复试科目 学术型研究生 080802电力系统及其自动化 F008:电力系统设备与保护（适于初试考《电力系统分析基础》及相近科目的考生）F009：电力系统分析（适于初试未考《电力系统分析基础》的考生） 080804电力电子与电力传动 F010：电力电子或F011：单片机原理与接口技术（仅适于初试考《电力电子》及相近科目的考生） 专业型研究生 085207电气工程 F008:电力系统设备与保护（适于初试考《电力系统分析基础》及相近科目的考生）F009：电力系统分析（适于初试未考《电力系统分析基础》的考生） 注：参考书目二、调剂要求1．考生初试成绩总分及各单科分均达到国家规定的A类地区研究生复试分数线。2．调剂考生必须是已获得大学本科学历证书的毕业生或全日制大学本科应届毕业生。3．"中国研究生招生信息网"设立的2015年研招调剂服务系统一经开通，按要求填报调剂志愿，否则调剂无效，且不接受其他形式投递简历会和投递调剂申请的考生。三、专业介绍电力系统及其自动化代码：080802电力系统及其自动化学科是上海市重点学科，本学
科立足现代电力系统，涉及电气工程的各个领域，在电力系统规划、电力系统安全稳定、电力系统优化运行、继电保护及控制、电气设 备状态监测与诊断、新能源与智能电网等领域形成了优势和特色。 经过多年建设，已经形成了鲜明的学科特色，较为合理的学术梯队 和良好的科研发展态势。目前有教授12人，副教授和高级工程师 30人，具有博士学位的教师35人，拥有较强的师资力量。本学科 面向电力系统，每年向电力行业输送大批专业人才，与电力企业有 密切的合作关系，研究课题来自国家自然科学基金、863项目、省 部级攻关项目、各级电力公司、发电集团、工业企业等。目前，本 学科每年科研经费达1000余万元。本学科拥有上海市"电站自动化 技术"重点实验室、上海绿色能源并网工程技术研究中心、国家级新能源电力系统教学实验中心、上海"电力能源转换"工程技术研究中心、上海市电工电子实验教学示范中心等，在中央与地方共建实验 室项目、上海市教委高水平项目等支持下，建设了"现代城市电网综合仿真中心"、"新能源与智能电网实验中心"等学科平台，含电力系统动模实验室、继电保护实验室、综合自动化实验室、风力发电技 术实验室等，软、硬件设施适应国内外工业界和学术界的最新发展，科学研究条件良好。电力电子与电力传动代码：080804电力电子与 电力传动学科是上海市重点学科，本学科立足先进的电能变换技术，主要研究新型电力电子器件及应用、电能变换与控制的原理与方法、电力生产与传输中的电能变换技术、电力传动及电能应用等。经过 多年建设，已经形成了鲜明的学科特色，较为合理的学术梯队和良 好的科研发展态势。目前有教授4人，副教授16人，具有博士学位的教师15人，拥有较强的师资力量。本学科的特色是面向电力系统和新能源应用，将在电力工业的发展中起着越来越广泛和深入的作用。科研项目和研究生课题主要来自国家自然科学基金、863项目、省部级攻关项目、各级电力公司、发电集团、工业企业等。目前， 本学科每年科研经费达500余万元。本学科拥有上海市"电站自动化技术"重点实验室、上海绿色能源并网工程技术研究中心、国家级新能源电力系统教学实验中心、上海"电力能源转换"工程技术研究中心、上海市电工电子实验教学示范中心等，在中央与地方共建实验 室项目、上海市教委高水平项目等支持下，建设了"新能源与智能电网实验中心"、"可再生能源研发中心"等学科平台，含电力系统动模
电机学题解 一．填空题（20分，每小题2分） 1. 变压器铁心在叠装时由于装配工艺不良，铁心间隙较大，主磁通将，励磁 电流将。 2. 一台单相变压器进行空载试验，在高压侧加额定电压测得的损耗和在低压侧加 额定电压测得的损耗______。 3. 三相变压器组不宜采用Y,y联接组，主要是为了避免。 4.不考虑铁心损耗时，当变压器的磁通随时间正弦变化时，磁路饱和的非线性性 质将导致激磁电流成为与磁通同相位的波。 5.变压器的绕组归算，实质上是在保持为不变量的条件下， 对绕组的电压、电流所进行的一种线性变换。 6. 直流电机的主磁路包括以下几段：电枢齿两个、电枢轭一段、主极铁心两个、定 子轭一段以及。 7.直流电机单叠绕组的并联支路对数为，单波绕组的并联支路对数。 8.直流电机的交轴电枢反应结果是：引起气隙磁场畸变；使物理中性线偏离几何中 性线一个角度；计及饱和时，对主磁场有。 9. 一台并励直流电动机拖动恒定的负载转矩，做额定运行时，如果将电源电压降低 了20℅，则稳定后电机的电枢电流为倍的额定电枢电流（假设磁路不饱和）。 10.一台串励直流电动机与一台并励直流电动机，都在满载下运行，它们的额定功 率和额定电流都相等，若它们的负载转矩同样增加1 N.m，则可知：电动 机转速下降得多，而电动机的电流增加得多。 1.不变，增加； 2.相等； 3.电压波形畸变； 4.尖顶波； 5.一次或二次侧磁动势； 6.两段气隙； 7. 2p，2；8.去磁作用；9. 1.25倍；10.串励，并励。
二．问答题（40分） 1.一台变压器Hz f N 50=，v U N 220=，当它接到频率为Hz f 25=，电压为 v U 110=的电源上运行时，问：励磁电流，铁耗，一、二次侧漏抗，负载能力如何变化？ 为什么？（8分） 答：由式m fN E U Φ=≈11144.4可知，前后两种情况主磁通相同。从磁路欧姆定律知，励 磁电流不变。主磁通未变，磁密不变，频率减小，则铁耗减小（3 .12f B p m Fe ∝）。一、二 次侧的漏电抗随频率的减小成正比减小。另外，二次侧感应电动势比原来减少一倍，故负载能力减小一倍。 2.变压器在额定电压和额定频率的电源下空载运行时，当频率保持不变，电源电压增加到1.1N U ，励磁电抗和铁耗如何变化，为什么？若变压器二次侧短路，励磁电抗和铁耗如何变化，为什么？（8分） .答：（1）此时主磁通增大，主磁路饱和程度增加，铁心磁导率减小，磁阻增大，由磁路欧姆定律知，励磁电流大大增加，反映在等效电路中就是励磁电抗减小。（2）二次侧短路，二次侧电流大大增加，由磁动势平衡知一次侧电流也大大增加，再从一次侧电压平衡方程式知，电压U 1不变，漏阻抗压降大大增加，则电动势E 1减小很多，主磁通随之减小，可知励磁电抗有所增加。 计算题（30分） 3.已知一台两极直流电机，主磁极不加励磁电流，只在电刷通以直流电流且电枢以一定的转速旋转，问电枢导体是否感应电动势、电刷两端的感应电动势为多少？为什么？（8分） 答：此时气隙磁密友电枢磁动势单独产生，而正、负电刷间导体电流的大小和方向不变，故气隙磁密相对于定子时静止的，旋转的电枢导体切割此气隙磁密而感应电动势。电刷两端的感应电动势为零，因正、负电刷间（支路间）导体感应电动势彼此抵消了。从辜承林教材 图2.35可清楚的知道这一点。 4.一台直流发电机，定子为6极，电枢绕组为单叠型式。正常运行时有三对电刷，如保持额定运行时转速及励磁电流不变，因故去掉一对电刷，忽略电枢反应的影响，试分析电机可能发出的最大功率。（8分） 答：单叠绕组的并联支路数为2p ，故原来有6条并联支路数，去掉相邻一对电刷后，支路数变为4条，其中三条是原来的，另一条由原来的三条支路串联而成。 正常运行时，a a a i ai I 62== ；
多刷题多刷题 大学英语B4 一、交际英语 1.- Hello, I'm David Chen. Nice to meet you. - _______ A.Are you? B.Nice to meet you too. C.Yes. D.Very nice. 答案：B 2.- Hello, could I speak to Mike please? - _________ A.Who are you? B.Who is speaking? C.What's wrong? D.Why? 答案：B 3.-May I move your bag a little and take this seat? -____________. A.I don't mind B.It doesn't matter C.You do it please D.Go ahead 答案：D 4.- I didn't mean to do that. Please forgive me. - _________ A.Not too bad. B.That's all right. C.It's a pleasure. D.Thank you. 答案：B 5.- It's rather cold in here. Do you mind if I close the window? - ________ A.Yes, please. B.No, please. C.Sure, please. D.I don't like it. 答案：B 二、阅读理解 People are so busy these days that many people have no time to cook. This becomes a problem, because most families love home cooking! The food tastes good and warm, and a family meal brings everyone together. In some families, meals are often the only times everyone sees one another the same time. Another reason people enjoy home cooking is that it is often a way of showing love. A parent who makes some cookies is not just satisfying a child's sweet tooth. She or he is sending a message. The message says, "I care about you enough to spend an hour cooking what you will eat
研究生毕业感言三篇 研究生毕业感言 (一) 研究生近三年时光转瞬即逝，在这近三年的道路上有成功也有失败，有欢笑也有泪水。曾经年少轻狂，曾经满面风霜。 三年的研究生生活眼看就要结束了，心里隐隐有一种伤感，也一有种激动和憧憬的心情。从起点走到终点，又从终点回到起点，如果简单的"结束"二字可以概括一切，我只能细细地去体会这其中的深意与内涵。 上海电力学院的研究生学习生活对我来说只有一次，它的绚丽和多彩是我们用一生的时间所不能更改和忘却的。回忆是每一件痛并快乐的事，驻足回眸三年来的求学之路，心中已是百感交集，感慨万千，几许苦涩，几许甘甜。 四年前，我在考研复习大军中不懈的追求努力，终于在xx年9月使我顺利地进入了上海电力学院电力系统及其自动化专业。当我怀着继续进深造学习心态，也怀着对有悠久历史行业背景上海电力学院的敬意，第一次踏入了上海这座现代文明的城市，第一次来学校，咋一看只有我本科的几分之一大，倒很像我初高中的学校一样，还真有点点失落。但很快，我被学校的热情接待和学校各级领导关心照顾感动，就在这个新的城市、新的学校中，在和新的老师还有新的同学不断的交流和帮助中，很快进入研一课程学习和生活中。 从研一开始我就确定了目标：大学里有许多东西值得学习但并没有精通掌握的专业内容加强自学，多参加研究生活动，积极地锻炼自己各方面的能力，力争毕业后进电力公司，为中国区域经济发展作出电力人的应有贡献。 那段时间基本每天都去图书馆看电力系统分析，电机学，继电保护等本科专业书籍。每天过得最充实的就是图书馆。我曾对自己说，我爱上电力学院是从图书馆开始的。开学后不久，我加入了研究生会，并成了学术部部长。这可能是我在电力学院成长中一个很重要的转折点。一年一度研究生迎新晚会，我们研究生会的同仁一起奋斗，那时开始学习音频制作，视频，电子相册等多媒体软件学习。在研会我遇到了本科学生会视频制同学和他们一起交流，到图书馆找书看，再到网络上下载相关软件，自己在寝室里钻研学习，常常熬夜晚。研一制作上海电力学院x级迎新晚会DVD光盘。可能是机缘巧合吧，我认识学校里多媒体网络中心张大森老师，跟张老师拍摄DV，剪辑视频，慢慢地我爱上了摄像，影视后期处理。 研一是我过得最充实，但也是最累，最辛苦的一年。除了正常的研究生上课外，我还常去旁听本科生的课，一段段时间忙着备考英语等级考试，计算机等级考试，学习视频特效制作，还有为学校重要会议，校友返校聚会DV拍摄视频制作，研究生会的日常工作。在其他研究生同学的眼里，我一直很匆忙，常常看到我在寝室里通宵，时常看到我背着摄像机，三角架在重要会场里...现在我仍在感叹，我那时我真的很累，也很憔悴。不过，收获总是在辛苦的付出的之后。那段时间，我得到了研究生会的同仁和学校多部门老师领导肯定和信任，我通过了计算机三级考试等，我也成一个业余的摄影爱好者，影视后期处理软件水平也在逐步提高，一次比一次制作更加有水准。 研究生毕业感言 (二) 三年前，在一个秋风送爽、丹桂飘香的季节里，56个年轻人带着56颗年轻的心来到了这个被许多人称为异乡的工大校园，寻找着属于我们的橄榄树，也挥洒着尚未磨灭的激情。 因为年轻，我们拥有斑斓的青春;因为年轻，我们更拥有五彩的梦想。在这青春的驿站中，我们尽情编织着自己的未来，书写着无悔的人生。
大学英语4 一、单项选择题(共15小题，每题3分，共45分) 1.The color of my umbrella is different from ____ of yours.( ) A.this B.that C.it D.one 2.The old couple decided to _____ a boy and a girl thoughthey had three children of their own. ( ) A.adapt B.accept C.receive D.adopt 3.She didn’t see Smith, _______.( ) A.neither did I B.nor didn’t I C.neither I did D.so didn’t I 4.The problem _______ at tomorrow’s meeting is a verydifficult one. ( ) A.being discussed B.discussed C.to be discussed D.to discuss 5.He doesn’t know _______ to stay or not. ( ) A.whether B.if C.either D.if he will 6.People appreciate_______ with him because he has a goodsense of humor. ( ) A.to work B.to have worked C.working D.have working 7.We had some trouble _____ the house and nobody seemed_____ where it was. ( ) A.in finding; knowing B.finding; to know C.to find; knowing D.to find; to know 8.The meeting _____ over, we all left the room. ( ) A.is B.to be C.being D.would be 9.I used to sleep with the window ______.( ) A.opened B.open C.opening D.to open 10. _______ by the police, the kidnappers had no choicebut to surrender. ( ) A.surrounded B.surrounding C.having surrounded D.to be surrounded 11.____ her mother had come, her face lit up. ( ) A.Hearing B.Having heard C.When hearing D.When she heard 12.It was ______ he said ______ disappointed me. ( ) A.what; that B.that; what C.that; when D.it; when 13.I didn’t go to t he concert. But I do wish I ______ there. ( ) A.was B.had been C.were D.went
电气工程五个二级学科 主要研究方向: 1、电力系统及其自动化：电力市场、电力系统运行与控制、电力系统稳定与控制、人工智能技术在电力系统中应用、电力系统优化、配电自动化系统； 电机与电器：大型发电机设计与新型冷却技术、大型电机的理论、运行、监测与诊断、电机及其智能控制系统、电机内部物理场的理论分析与数值计算； 电力电子和电力传动：电能质量改善及功率信号处理技术、特种电源的研究、电力系统的信号检测及电力装置的电子保护、智能控制系统、电力传动及控制技术、电力电子与电力传动中的控制理论及应用、大型机电设备在线监测； 高电压和绝缘技术：高电压数字测量与计量、电气设备在线检测与故障诊断、电力系统过电压与绝缘配合、工程电介质与特种绝缘技术、高电压技术在非电力系统中的应用、电力系统电磁兼容； 电工理论与新技术：电路分析与优化设计、电磁场生态环境效应、神经网络与遗传算法、网络智能应用、新型传感器、多媒体数据库理论及应用。 电力系统及其自动化（59） 电力电子与电力传动（86）
高电压与绝缘技术（20） 电机与电器（43）
电工理论与新技术（39） 三、电气工程专业就业前景 电气工程专业大部分毕业生就业都选择在电力系统及其相关领域就业。电力系统单位主要包括：发电企业，供电企业和电气设备制造公司三大类。除些之外还包含有电力设计院，电力规划院，电力建设，电力科研开发等部门。我国现有的国有大型发电集团有：中国华能集团、中国大唐集团、中国华电集团、中国国电集团和中国电力投资集团；电网公司有：国家电网公司和南方电网公司；电气设备制造企业有：上海电气电站、新疆特变电工等，一些毕业生也行选择到跨国公司等外企工作，比较典型有的SIEMENS、ABB、SCHNEIDER、AREVA、VESTAS 等。 电力工业的迅速发展为本专业毕业生提供了大量的就业机会及就业岗位。2007年全国电力
直流電機 一、选择 １直流并励电动机的输出功率等于： ⑴ＵN*ＩN*ηN; ⑵ＵN(ＩN-Ｉf)；⑶ＵN*ＩN。 ２直流发电机电枢导体中的电流是： ⑴直流电；⑵交流电；⑶脉动的直流。 ３要改变并励直流电动机的转向，可以： ⑴增大励磁；⑵改变电源极性；⑶改接励磁绕组。４一台直流它励发电机，６极，单迭绕组，额定电流为１５０安，电枢绕组的支路电流为： ⑴１２．５安；⑵２５安；⑶５０安。 ５直流发电机的电磁转矩与转速的方向： ⑴相同；⑵相反；⑶无关。 ６一台并励直流发电机正常运行后停机，现将原动机反转，希望能正常工作，应该： ⑴将并励绕组反接；⑵将电枢绕组反接； ⑶将并励绕组和电枢绕组同时反接。 ７一台并励直流发电机，在５００转／分时建立空载电压１２０伏，若把转速提高到１０００转／分，则该电机空载电压： ⑴等于２４０伏；⑵大于２４０伏； ⑶大于１２０伏，但小于２４０伏；⑷无法判断。 ８一台直流并励电动机，拖动一不随转速而变化的恒定负载运行，原来输出功率为额定值，当电枢回路中串入一电阻Ｒ使电机转速下降，不计电枢反应作用，则
在新的稳定运行状态下，电枢电流： ⑴小于额定值；⑵等于额定值； ⑶大于额定值；⑷不能确定。 ９直流它励电动机空载运行时，若不慎将励磁回路断开，电机转速将： ⑴增至不允许的值，即“飞车”； ⑵升至新的值稳定运行；⑶减速直至停止。 １０一台并励直流发电机希望改变它电枢两端的正负极性，采用的方法是： ⑴改变原动机的转向；⑵改变励磁绕组的接法； ⑶既改变原动机的转向又改变励磁绕组的接法。 １１一台空载电压为１００伏的并励直流发电机，空载励磁电流为１．０安，若励磁电流增加到２．０安，此时电枢电压： ⑴大于１００伏但小于２００伏； ⑵等于２００伏；⑶大于２００伏。 １２一台直流电动机在额定电压下空载起动，和在额定电压下半载起动，两种情况下的合闸瞬时起动电流： ⑴前者小于后者；⑵两者相等；⑶后者小于前者 １３一台额定电压为２２０伏的直流串励电动机，误接在交流２２０伏的电源上，此时电动机将产生： ⑴方向交变的电磁转矩；⑵方向恒定的电磁转矩； ⑶不产生电磁转矩。 １４一台串励直流电动机，若把电刷顺旋转方向偏离几何中心线一个角度，设电机的电枢电流保持不变，此时电动机的转速： ⑴降低；⑵升高；⑶保持不变。
大学英语四主观试题及参考答案 一、英译汉（每小题5分，共30分） 1.I think the picture shows us how fruits is necessary to life. 我认为这幅图展示给我们水果对于我们的生活重要性。 2.In Foreign Languages Department，a checking machine is used to correct the students' test papers. 在国外的语言机构，通过检查机器来批阅学生的试卷。 3.It's always a pleasure to see many friends here in London. 在伦敦见到朋友们总是让我很开心 4.Yeah, but they play the same songs over and over again. 是的，但是他们总是演奏同样的曲子一遍又一遍。 5.Apples here like water and sunshine. 这里的苹果像水和阳光。 6.Do you think students should do a part-time job? 你认为学生是否应该做兼职？ 二、写作（每小题15分，共30分） （一）、.建议你在30分钟内，根据下面所给的题目和提纲用英语写出一篇不少于80词的短文。 1.学习方法对英语学习的重要性； 2.你的英语学习方法。 How to Learn English Well？ （二）、建议你在30分钟内，根据下面所给的题目和提纲用英语写出一篇不少于80词的短文。1．回忆值得记忆的一天； 2．说明为什么值得记忆。 A Day to Remember
異步電機 一、选择 １三相异步电动机电磁转矩的大小和（）成正比。 ⑴电磁功率；⑵输出功率； ⑶输入功率，⑷总机械功率 ２如果三相异步电动机电源电压下降１０％，此时负载转矩不变，则转子电流Ｉ2: ⑴减小；⑵增加；⑶不变。 ３一台绕线式异步电动机，在恒转矩负载下，以转差率Ｓ运行，当转子边串入电阻Ｒ’＝２Ｒ2’时,则所得转差率将为（Ｒ’已折算到定子边）： ⑴等于原先的转差率Ｓ； ⑵三倍于原先的转差率； ⑶两倍于原先的转差率； ⑷在两倍与三倍之间。 ４有一台两极绕线式异步电动机要把转速调上去，下列哪一种调速方法是可行的：⑴变极调速；⑵转子中串入电阻；⑶变频调速。 ５三相异步电动机等效电路中的等效电阻（（１－Ｓ）／Ｓ）Ｒ2'上所消耗的电功率Ｐ＝ｍ1·Ｉ2’·Ｉ2’（（１－Ｓ）／Ｓ）Ｒ2’应等于： ⑴输出功率Ｐ2；⑵输入功率Ｐ1; ⑶电磁功率Ｐm； ⑷总机械功率Ｐ。 ６一台三相异步电动机运行在Ｓ＝０．０２时，由定子通过气隙传递给转子的功率中有： ⑴２％是电磁功率； ⑵２％是总机械功率； ⑶２％是机械损耗； ⑷２％是转子铜耗。 ７三相异步电动机的磁势平衡是：
⑴定、转子磁势的代数和等于合成磁势； ⑵定、转子磁势的相量和等于合成磁势； ⑶定、转子磁势波形在空气隙中之和等于合成磁势； ⑷定、转子磁势算术差等于合成磁势。 ８一台三相异步电动机转子电流Ｉ2和电势Ｅ2之相位差与（）有关。 ⑴转子的转速； ⑵转子磁势的转速； ⑶定子磁势的转速； ⑷负载的大小 ９异步电动机的空载电流比同容量的变压器大，其原因是： ⑴异步电机的效率低； ⑵因为异步电机是转动的； ⑶异步电机空气隙较大； ⑷异步电机漏抗较大。 １０三相异步电动机最大转矩的大小： ⑴与转子电阻成正比； ⑵和转子电阻无关； ⑶近似和短路电抗成反比； ⑷和短路电抗无关。 １１如果有一台三相异步电动机运行在转差率Ｓ＝０．２５，此时通过空气隙传递的功率有： ⑴２５％是转子铜耗； ⑵７５％是转子铜耗； ⑶７５％是总机械功率； ⑷２５％是总机械功率。 １２一台三相异步电动机，额定电压为３８０伏，在额定负载下运行，如果电网电压突然降低到３４０伏，此时异步电动机将：
大学英语 一、单项选择题?共 小题，每题 分，共 分? ??? ??●?? ?? ?? ◆????●●? ?? ????????? ???? ???? ?? ??◆???? ? ?????? ?????? ???? ????? ???? ?●? ??◆?●? ??????? ?? ????? ? ??? ??? ? ???● ???◆?????? ??? ????? ???●???? ?? ????? ???? ? ???????? ???????? ????????? ??????? ??? ?????? ??? ?????? ????????? ? ????????? ??? ? ????? ?????? ? ????????? ? ??? ???? ?????? ? ??? ????●?? ??????? ?? ?????????? ??????? ?? ? ??????????◆●? ???? ? ? ??????? ????◆???? ??????◆???? ???? ?? ????◆???? ???? ????◆?? ??? ??????? ???? ??????? ?? ???? ?? ???? ? ?????????? ???? ???????? ???? ?? ??●● ?????●? ????????????????? ???? ??? ????◆?? ?? ??? ? ????????? ?? ?◆???? ? ? ???? ???? ???? ???? ?????? ????????? ?????? ??????? ?? ??? ???? ???◆?●? ????? ??? ??◆?? ??? ?????? ??????????? ????? ?? ???? ? ? ???? ???????? ??????? ?????????? ?? ???? ???? ????? ??????? ???? ????? ?? ????
2007—2009年度电力行业精品教材评选结果 序号精品教材名称主编及单位参编及单位1 电路上海电力学院杨欢红上海电力学院杨尔滨刘蓉晖 2 电路分析基础南京工程学院王玫（主编） 宋卫菊田丽鸿（副主编） 南京工程学院郁汉琪 3 数字电子技术基础华北电力大学李月乔华北电力大学刘向军刘春颖王赟赵莲清陈晓梅文亚凤 4 电子技术(高等学校分层教学B) 兰州交通大学罗映红兰州交通大学陶彩霞赵霞 5 工程电磁场（附光盘）武汉大学杨宪章（主编） 湖北工业大学邹玲（副主编） 武汉大学樊亚东（副主编） 湖北工业大学王东剑刘俐 武汉大学李晓萍 武汉科技大学李文翔张丽 6 电机学华南理工大学陈世元华南理工大学杨向宇程小华何志伟尹华杰梁冠安 7 电机学东北电力大学曾令全东北电力大学李月玲庄旭赵妍李书权 8 微特电机及系统东南大学程明东南大学林明耀 内蒙古工业大学张润和 序号精品教材名称主编及单位参编及单位
9 自动控制原理-理论篇上海电力学院杨平（统稿）翁思义（统稿）郭平 10 自动控制元件哈尔滨工程大学池海红（统稿）单蔓红哈尔滨工程大学刘涛 11 可编程控制器应用技术河北建筑工程学院范永胜（统稿） 黑龙江工程学院徐鹿眉（主编） 河北建筑工程学院桂垣（副主编） 黑龙江工程学院宋起超（副主编） 河北建筑工程学院王有春张晓峰 12 检测技术及仪表东北电力大学王建国（主编） 刘彦臣（副主编） 华北电力大学仝卫国（副主编） 东北电力大学沈继忱陈立军张玉财 13 检测与转换技术河南理工大学董爱华（主编） 李良（副主编） 河南理工大学余琼芳苏波吕辉曾志辉 刘群坡仝兆景 郑煤集团谢东力 14 传感器与检测技术原理及实践黑龙江科技学院付家才（主编） 沈显庆孟毅男（副主编） 黑龙江科技学院韩龙曹小燕周杰孙鹏 潘洪亮孙桂芝 15 过程参数检测及仪表华北电力大学常太华（统稿）苏杰华北电力大学仝卫国 16 自动化专业概论华北电力大学韩璞（统稿）东北电力大学王建国 17 电力工程概论（第三版）上海电力学院韦钢上海电力学院张永健陆剑峰丁会凯序号精品教材名称主编及单位参编及单位
《大学英语》试卷 考试时间：90分钟闭卷任课老师： 班级：学号：姓名：成绩：Ⅰ.Match the words in column A with the explanations in column B. (15 points) Column A Column B 1.term a.. easy to get to 2.department b. accept sth.as true 3.overseas c. give great pleasure to 4.charge d. one of several division in a university, etc. 5.worth e. abroad 6.believe f. one of the periods into which the academic year is divided 7.somewhat g.. become less tense; rest 8.convenient h.. good of useful enough to do or have 9.relax i. responsibility, care or control 10.delight j. a little II.Multiple choice questions (15 points) There are five sentences in this section. Beneath each sentence there are four choices marked A, B, C and D. Choose one or more that you think are suitable. park. A. paintings B. pictures C. files D. films 12. The is very useful. She can helps me to find many good books. A. employer B. member C. monitor D. librarian 13. Small cars are of fuel, so they have more appeal for consumers. A. free B. short C. typical D. economical 14. Next Sunday is her birthday.I ______her a bicycle as a present. A.allow B.give C.offer D.promise 15. I was in s small countryside in China. A. brought up B. bring up C. raised up D. raise up 16. Miss Yang is likely to be for promotion. A. sent B. recommended C. advised D. reported
电气工程考研高校排名 导读：我根据大家的需要整理了一份关于《电气工程考研高校排名》的内容，具体内容：电气工程专业是个大科目，分科也多。那么对你电气工程考研选哪些高校有兴趣吗?下面就由我为你带来分析，希望你喜欢。综合介绍清华大学(专职院士2人：卢强、韩英铎[5] ，I... 电气工程专业是个大科目，分科也多。那么对你电气工程考研选哪些高校有兴趣吗?下面就由我为你带来分析，希望你喜欢。 综合介绍 清华大学(专职院士2人：卢强、韩英铎[5] ，IEEE Fellow 8人：卢强、何金良、宋永华(兼职)、王善祥、张伯明、梅生伟、康重庆、董新洲[5] ，国家重点实验室1个：电力系统及大型发电设备安全控制和仿真国家重点实验室[6] ，电气工程国家一级重点学科) 华中科技大学(专职院士3人：樊明武、潘垣、程时杰[7] ，IEEE Fellow 1人：程时杰[8] ，国家重点实验室1个：强电磁工程与新技术国家重点实验室，国家专业实验室1个：新型电机国家专业实验室，电气工程国家一级重点学科) 西安交通大学(专职院士2人：王锡凡、邱爱慈，IEEE Fellow 2人：王锡凡、邱毓昌，国家重点实验室1个：电力设备电气绝缘国家重点实验室[9] ，电气工程国家一级重点学科) 浙江大学(专职院士3人：韩祯祥，汪槱生[10] ，宋永华[11] ，IEEE Fellow 3人：宋永华、何湘宁、徐德鸿[12] ，国家专业实验室1个：电
力电子技术国家专业实验室，国家工程研究中心1个：电力电子应用国家工程研究中心[13] ，电气工程国家一级重点学科) 重庆大学(专职院士1人：李文沅，IEEE Fellow 1人：李文沅[14] ，国家重点实验室1个：输配电装备及系统安全与新技术国家重点实验室，[15] 电气工程国家一级重点学科) 华北电力大学(专职院士1人：杨奇逊[16] ，国家重点实验室1个：新能源电力系统国家重点实验室[17] ，国家工程实验室1个：生物质发电成套设备国家工程实验室[18] ，国家工程技术研究中心1个：国家火力发电工程技术研究中心[19] ，国家二级重点学科：电力系统及其自动化)哈尔滨工业大学 (专职院士1人：梁维燕，IEEE Fellow 1人：徐殿国[20] ，国家二级重点学科：电机与电器，该校在此领域享有国际盛誉。)天津大学(专职院士1人：余贻鑫，国家二级重点学科：电力系统及其自动化) 西南交通大学(专职院士1人：钱清泉，国家工程技术研究中心1个：国家轨道交通电气化与自动化工程技术研究中心[21] ，国家二级重点学科：电力系统及其自动化，国家二级重点(培育)学科：电力电子与电力传动) 上海交通大学(专职院士1人：饶芳权) 海军工程大学(专职院士1人：马伟明，国家二级重点学科：电力系统及其自动化) 南京航空航天大学(IEEE Fellow1人：阮新波[22] ，国家二级重点(培育)学科：电力电子与电力传动)
ⅠV ocabulary and Structure （10 points，i point for each item） 从下列各句四个选项中选出一个最佳答案，并将选项号填在答题纸的相应位置上。 1.Studies have shown _______ teenagers often suffer form depression. A.that B.which C.in which D.in that 2.The party has failed to _______ the majority of voters that it is capable of governing the country. A.trust B.credit C.convince D.believe 3._______ driving around all day looking for somewhere to park，why don‘t you take a bus to town？ A.In spite of B.Rather than C.In palce of D.Other than 4.The kids are _______ be hungry when they get home—they always are. A. obliged to B. bound to C. desired to D. motivated to 5.All the characteristics that distinguish birds _______ other animals can be traced to prehistoric times. A.to B.between C.for D.from 6.When the city was _______，everyone knew that total defeat was certain. A.cut off B.cut down C.cut across D.cut out 7.If we _______ everything ready by now，we should be having a terrible time tomorrow. A.hadn‘t got B. didn’t get C.wouldn‘t have got D. wouldn’t get 8.In his composition there were no other errors _______ a few misspelled words. A.beside B.except C.then D.than 9.In deciding _______ a course of action，the candidates tried to estimate its likely impact
一、选择 １一台单相变压器，额定电压为220／110伏，当原边电压为250伏时，变压器等效电路中的励磁电抗将：⑴不变；⑵变大；⑶变小；（4）无法预测。 ２若其它条件不变，变压器产生的主磁通φ，在空载和负载时，其大小：⑴完全相等；⑵基本不变；⑶负载越大φ越小；（4）负载越大φ越大；（5）与负载性质有关。 ３引起单相变压器的空载电流中的三次谐波电流分量的原因是：⑴副边没有负载；⑵磁路的饱和效应；⑶电源中有三次谐波电压分量；⑷由于磁路不对称。 ４一台单相变压器，原边阻抗和折算后的副边阻抗相等，若此变压器在额定电压下短路（指稳态短路），此时铁芯中的磁通：⑴略微减少一点；⑵增加到近似原来磁通的2倍；⑶略微增加一点；（4）减少到近似原来磁通的1/2。 ５一台单相变压器进行空载试验，在高压侧加额定电压进行测量，或低压侧加额定电压进行测量，所测得损耗：⑴不相等且相差较大；⑵低压侧测到的损耗是高压侧测到的k倍；⑶近似相等；（4）低压侧测到的损耗是高压侧测到的k2倍；（5）低压侧测到的损耗是高压侧测到的1/k；（6）高压侧测到的损耗是低压侧测到的k2倍。 ６一台单相变压器，额定电压为220／110伏，当原边绕组接到220伏50赫交流电源后，副边开路，铁芯中的磁通为φ1;若将原边绕组接到110伏25赫交流电源后，副边开路，铁芯中的磁通为φ2;则：⑴φ1=2φ2；⑵φ1=4φ2；⑶φ1=φ2/2；（4）φ1=φ2；（5）φ1=φ2/4。 ７当变压器副边电流增加到额定值时，若要保持副边电压不变，即△Ｕ％＝０，那么副边负载阻抗是：⑴纯电感；⑵纯电阻；⑶纯电容；（4）电阻电感；（5）电容电阻。 ８一台单相变压器，当原边电压下降一半时，变压器等效电路中的励磁电抗：⑴不变；⑵变大；⑶变小；（4）可能不变也可能变大；（5）可能不变也可能变小；（6）都有可能。 ９变压器短路试验常在高压侧进行，其原因是：⑴高压侧电流较小便于测量；⑵低压侧电流太大可能使变压器过电流损坏；⑶低压侧电压太底难以测量；⑷变压器发热可以小一点。 １０一台变压器当副边电阻性负载电流增加时，假定外施电压不变，则铁芯中的主磁通：⑴略有增加；⑵略有减少；⑶不变；⑷变化很大。 １１如果电源电压为平顶波形，将此电压施于一台单相变压器，此时该变压器铁芯中的磁通波形为：⑴马鞍形波；⑵平顶波；⑶正弦波；（4）尖顶波。 １２一台单相变压器在铁芯迭装时，由于硅钢片剪裁不当，迭装时接缝处留有较大的缝隙，那么此台变压器的空载电流将：⑴减少；⑵增加；⑶不变。 １３一台变压器额定频率为50赫，如果接到60赫的电源上，且电压的数值相等，那么此变压器铁芯中的磁通：⑴减少1/5；⑵不变；⑶增加1/5；（4）减少1/6；（5）增加1/6。 １４一台单相变压器，原绕组有100匝，外施额定电压为100伏，空载时在离末端5匝处发生短路，此时电源流入的电流：⑴很大，达到不允许的值；⑵较大，但还允许；⑶不大。 １５Ｙ／Ｙ联接的三相变压器组，在空载运行时，由于（）有害于变压器的正常运行。
大学英语四级阅读理解试题及答案（四） 十六 Trees shoul d only be pruned when there is a good and clear reason for doing so and , fortunately,the number of such reasons is small. Pruning involves the cutting away of obergrown and unwanted branches, and the inexperienced gardener can be encouraged by the thought that more damage results from d oing it unnecessarily than from l eaving the tree to grow in its own way. First, pruning may be d one to make sure that trees have a d esired shape or size. The object may be to get a tree of the right height, and at the same time to help the growth of small side branches which will thicken its appearance or give it a special shape. Secondly, pruning may be done to make the tree healthier. You may cut diseaed or dead wood, or branches that are rubbing against each other and thus cause wounds. The health of a tree may be encouraged by removing branches that are blocking up the centre and so preventing the free movement of air.