Unit1 1.Our big old house was closely related with the joys and sorrows of four generations. 2.I planted these roses a long, long time ago before your mother was born. 3.Many sons left home to fight against the Fascist Nazi. 4.Take the first friendly greeting and always keep it deep in your heart. Unit2 1. A gracious manner adds the greatest splendor to your image. 2. I firmly believed the note my guest send me didn’t take long to write. 3. The simple phrase “Excuse me” made most of your irritation disappear. 4. Being on time is a virtue which belongs not only to the past but also to the present. 5. Y ou shouldn’t accept the other person’s presence without thinking of its importance. 6. Good manners produce the same feelings or actions in others. Unit3 1. I tried to comfort her by saying that we would manage to tide it over. 2. Having experienced the event, the girl might consider her visit to London rather insignificant. 3. The businesswoman as confident as that businessman must have noticed my fear.
综英第六册课后翻译参考答案 Unit 1 1.这项计划为智力迟钝者提供长期的照顾。 The program offers long-term care for the mentally retarded. 2.他有一台又粗笨有庞大的旧电脑，速度慢，使用麻烦。 He’s got a cumbersome, bulky, old computer—it’s slow and complicated to use. 3. 他沿着房间后部慢慢移动，尽量不引起别人注意。 He tried not to look conspicuous and moved slowly along the back of the room. 4. 安装一个不同的计算机系统将会导致巨大的变化。 It would cause a tremendous upheaval to install a different computer system. 5. 她再次与金牌失之交臂。 The gold medal continues to elude her. 6. 你真是个傻瓜，竟然没抓住这么好的机会。 You’d be a fool not to embrace an opportunity as good as that. 7.她的薪水将猛增10%。 Her salary will go up by a hefty 10%.
8.我草草的留了张纸条给希拉里，塞在门缝底下。 I scrawled a quick note to Hilary and put it under her door. 9.她的办公室视野极佳。 There’s a smashing view from her office. 10 去那儿旅行很愉快，只是旅馆有些脏兮兮的。 The trip out there was swell, but the hotel was a bit crummy. Unit 2 1.这家公司是由几名有事业心的年轻人创立的。 The company was started by a couple of enterprising young men. 2.他是前重量级冠军，预计会轻松地拿下这场拳击赛。 He’s a former heavyweight champion and is expected to win the bout easily. 3.为写此书，投入了许多小时一丝不苟的前期准备。 Many hours of meticulous preparation have gone into writing the book. 4.她从头到脚穿一身黑。 She was attired from head to foot in black. 5.我节衣缩食整整一年，为的是攒我们去度假的钱。
《模拟电子技术》模拟试题一 一、填空题：（每空1分共40分） 1、PN结正偏时（导通），反偏时（截止），所以PN结具有（单向） 导电性。 2、漂移电流是（温度）电流，它由（少数）载流子形成，其大小与（温 度）有关，而与外加电压（无关）。 3、所谓理想二极管，就是当其正偏时，结电阻为（0 ），等效成一条直线；当其 反偏时，结电阻为（无穷），等效成断开； 4、三极管是（电流）控制元件，场效应管是（电压）控制元件。 5、三极管具有放大作用外部电压条件是发射结（正偏），集电结（反偏）。 6、当温度升高时，晶体三极管集电极电流Ic（变小），发射结压降（不变）。 7、三极管放大电路共有三种组态分别是（共基）、（共射）、（共集） 放大电路。 8、为了稳定三极管放大电路的静态工作点，采用（电压并联）负反馈，为了稳 定交流输出电流采用（串联）负反馈。 9、负反馈放大电路和放大倍数AF=（1/（1/A+F）），对于深度负反馈放大电路 的放大倍数AF=（1/ F ）。 10、带有负反馈放大电路的频带宽度BWF=（）BW，其中BW=（）， （）称为反馈深度。 11、差分放大电路输入端加上大小相等、极性相同的两个信号，称为（）信号， 而加上大小相等、极性相反的两个信号，称为（）信号。 12、为了消除乙类互补功率放大器输出波形的（）失真，而采用（）类互 补功率放大器。 13、OCL电路是（）电源互补功率放大电路； OTL电路是（）电源互补功率放大电路。 14、共集电极放大电路具有电压放大倍数（），输入电阻（），输出电阻 （）等特点，所以常用在输入级，输出级或缓冲级。 15、差分放大电路能够抑制（）漂移，也称（）漂移，所以它广泛应用于（） 电路中。 16、用待传输的低频信号去改变高频信号的幅度称为（），未被调制的高频信 号是运载信息的工具，称为（）。
P87 Vocabulary check ?课后翻译: ?1,He never stopped dreaming to be a manager. ?2,consists of three parts. ?3,our sales totaled ﹩2million. ?4, to meet the chanllenge of market competition. ?5,how the earth was originally formed. P96 comprehensive exercise ?1.we must carefully observe the changes in the market. ?2.we plan to advertise our new product in the newspaper next week. 3.china is trying every means to introduce new tecnologies to the western part. ?4.consumer rights must should be protected by law.
comprehensive exercise ?5.An important way to get rid of poverty is to develop the economy. ?6.The service industry has become an important role in the company. ?7.He plays a more and more impotant role in the company ?8.we must improve our efficiency at work. P107 Vocabulary check part A ?china has made great progress in science and technology. ?have double meanings. ?gave me a copy of his latest book. ?divide ourselves into three discussion groups. ?sells all sorts of imported flowers.
综英3课后翻译答案
综英3课后答案 Unit 1 Fresh start Vocabulary. 1. Explain the underlined part in each sentence in your own words. (1) I had just the feeling of a newcomer to college without the strength only an experienced student might possess. (2) My apparent confidence. (3) Some food to appease my hunger. (4) Going with the tide of the majority was no longer crucial to your success. (5) Foolish and glaring mistakes. 2. Fill in the blank in each sentence with a word taken from the box in the proper form. (1) distress; (2) clutched; (3) pose; (4) sneaked; (5) preoccupation; (6) shackles; (7) curse; (8) deliberation. 3. Fill in the blanks with the appropriate forms of the given words. (1) assure; (2) discretion; (3) relaxation; (4) humiliation; (5) strategy; (6) embarrassment; (7) maneuverable; (8) immaturity. 4. Fill in the blank in each sentence with an appropriate phrasal verb or collocation taken from the text. (1) lived up to; (2) headed for; (3) seek out; (4) has broken out; (5)grope for; (6) trying …on; (7) go out to; (8) tipped off. 5. Give a synonym or an antonym of the word underlined in each sentence in the sense it is used. (1) vague (indistinct); (2) inconspicuously (unobtrusively); (3) self-restraint (self-control); (4) clever (intelligent,sensible); (5) manner (behavior); (6) excited (agitated); (7) sneak; (8) mature (sophisticated). 6. Explain the underlined phrasal verbs in your own words. (1) became popular; (2) respect;(3) keep up; (4) lead to; (5)understand; (6) found; (7) use; (8) start Grammer. 1. combine each nominal clause in Column A with … 1~ 4 CDBF 5~8 AEHG 2. Rewrite the following sentences… (1) My decision to resign was wise. (2) Their readiness to accept the peace agreement really surprised the diplomatic world.
第1页 共5页 一、填空（共20空，每空 1 分，共 20 分，所有答案均填写在答题纸上） 1、场效应管被称为单极型晶体管是因为 。 2、晶体三极管的输出特性可分三个区域，当三极管工作在 区时， b I Ic β<。 3、场效应管可分为 型场效应管和结型场效应管两种类型。 4、在由晶体管构成的单管放大电路的三种基本接法中，共 基本放大电路只能放大电压不能放大电流。 5、在绘制电子放大电路的直流通路时，电路中出现的 视为开路， 视为短路，信号源可视为为短路但应保留其内阻。 6、多级放大电路级间的耦合方式有直接耦合、阻容耦合、 和 耦合等。 7、晶体管是利用 极电流来控制 极电流从而实现放大的半导体器件。 8、放大电路的交流通路用于研究 。 9、理想运放的两个输入端虚断是指 。 10、为判断放大电路中引入的反馈是电压反馈还是电流反馈，通常令输出电压为零，看反馈是否依然存在。若输出电压置零后反馈不复存在则为 。 11、仅存在于放大电路的交流通路中的反馈称为 。 12、通用集成运放电路由 、 、输出级和偏置电路四部分组成。 13、如果集成运放的某个输入端瞬时极性为正时，输出端的瞬时极性也为正，该输入端是 相输入端，否则该输入端是 相输入端。 14、差分放大电路的差模放大倍数和共模放大倍数是不同的， 越大越好， 越小越好。 二、单项选择题（共10题，每题 2 分，共 20分；将正确选项的标号填在答题纸上） 1、稳压二极管如果采用正向接法，稳压二极管将 。 A ：稳压效果变差 B ：稳定电压变为二极管的正向导通压降 C ：截止 D ：稳压值不变，但稳定电压极性发生变化 2、如果在PNP 型三极管放大电路中测得发射结为正向偏置，集电结正向偏置，则此管的工作状态为 。 A ：饱和状态 B ：截止状态 C ：放大状态 D ：不能确定 3、测得一放大电路中的三极管各电极相对一地的电压如图1所示，该管为 。 A ： PNP 型硅管 B ：NPN 型锗管 C ： NPN 型硅管 D ：PNP 型锗管
综英期末考试所对应的课后习题的答案 （一.Explain the underlined part in each sentence in your own words. 二.Translate the following sentences into English, using the words and phrases given in brackets. ) Unit 1 一．1.When I was ten I suddenly found myself faced with the anguish of moving from the only home. 2.…they all share the same characteristic: sadness. 3. …in that place in your heart where summer is an everlasting season. 4.Don’t ever let yourself overcome by the sadness and the loneliness of that word. 5. Take that special hello and keep it in your mind and don’ t ever forget it. 二．1. He has prepared answers to the questions that he expects to confront during the interview. 2.His sad story touched us so deeply that we nearly cried. 3.The two of them are walking hand in hand along the riverbank, chatting and laughing.
Unit 1 1.He is so devoted to his research that it never occurs to him that he will soon have to retire. 2.Many people have observed that, without effective checks, we all have a tendency to abuse our power. 3.Some countries refuse to get involved in this dispute and they resent any foreign interference. 4.The control of sand storms will involve a tremendous amount of work and money. 5.You have to take the local conditions into consideration when you apply these technologies. 6.All applicants will have to fill out these forms and mail in an application fee of 50 dollars. 7.Based on his careful observation of children’s behavior, he came to the conclusion that learning is a natural pleasure. 8.In a country of many nationalities, ethnic harmony requires very careful handling. 9.The government is determined to punish all the corrupt officials involved. 10.C heating at/on exams does not occur very often. But when it does, the school takes a very tough position. Unit 3
模拟电子技术基础试题汇总 一.选择题 1．当温度升高时，二极管反向饱和电流将( )。 A 增大 B 减小 C 不变 D 等于零 2. 某三极管各电极对地电位如图所示，由此可判断该三极管( ) A. 处于放大区域 B. 处于饱和区域 C. 处于截止区域 D. 已损坏 3. 某放大电路图所示.设V CC>>V BE, L CEO≈0，则在静态时该三极管处于( ) A.放大区 B.饱和区 C.截止区 D.区域不定 4. 半导体二极管的重要特性之一是( )。 ( A)温度稳定性( B)单向导电性( C)放大作用( D)滤波特性 5. 在由NPN型BJT组成的单管共发射极放大电路中，如静态工作点过高，容易产生 ( )失真。 ( A)截止失真( B)饱和v失真( C)双向失真( D)线性失真 6.电路如图所示，二极管导通电压U D＝，关于输出电压的说法正确的是( )。 A：u I1=3V，u I2=时输出电压为。 B：u I1=3V，u I2=时输出电压为1V。 C：u I1=3V，u I2=3V时输出电压为5V。 D：只有当u I1=，u I2=时输出电压为才为1V。 7.图中所示为某基本共射放大电路的输出特性曲线，静态工作点由Q2点移动到Q3点可能的原因是。 A：集电极电源+V CC电压变高B：集电极负载电阻R C变高 C：基极电源+V BB电压变高D：基极回路电阻R b变高。
8. 直流负反馈是指( ) A. 存在于RC 耦合电路中的负反馈 B. 放大直流信号时才有的负反馈 C. 直流通路中的负反馈 D. 只存在于直接耦合电路中的负反馈 9. 负反馈所能抑制的干扰和噪声是( ) A 输入信号所包含的干扰和噪声 B. 反馈环内的干扰和噪声 C. 反馈环外的干扰和噪声 D. 输出信号中的干扰和噪声 10. 在图所示电路中，A 为理想运放，则电路的输出电压约为( ) A. － B. －5V C. － D. － 11. 在图所示的单端输出差放电路中，若输入电压△υS1=80mV, △υS2=60mV ,则差模输 入电压△υid 为( ) A. 10mV B. 20mV C. 70mV D. 140mV 12. 为了使高内阻信号源与低阻负载能很好地配合，可以在信号源与低阻负载间接入 ( )。 A. 共射电路 B. 共基电路 C. 共集电路 D. 共集-共基串联电路 13. 在考虑放大电路的频率失真时，若i υ为正弦波，则o υ( ) A. 有可能产生相位失真 B. 有可能产生幅度失真和相位失真 C. 一定会产生非线性失真 D. 不会产生线性失真 14. 工作在电压比较器中的运放与工作在运算电路中的运放的主要区别是，前者的运 放通常工作在( )。 A. 开环或正反馈状态 B. 深度负反馈状态 C. 放大状态 D. 线性工作状态 15. 多级负反馈放大电路在( )情况下容易引起自激。 A. 回路增益F A &&大 B 反馈系数太小
一、填空（共20空，每空 1 分，共 20 分，所有答案均填写在答题纸上） 1、晶体管三极管被称为双极型晶体管是因为 。 2、晶体三极管的输出特性可分三个区域，只有当三极管工作在 区时，关系式b I Ic β=才成立。 3、场效应管可分为结型场效应管和 型场效应管两种类型。 4、在由晶体管构成的单管放大电路的三种基本接法中，共 基本放大电路既能放大电流又能放大电压。 5、在绘制放大电路的交流通路时， 视为短路， 视为短路，但若有内阻则应保留其内阻。 6、多级放大电路级间的耦合方式有 、 、变压器耦合和光电耦合等。 7、场效应管是利用 极和 极之间的电场效应来控制漏极电流从而实现放大的半导体器件。 8、放大电路的直流通路用于研究 。 9、理想运放的两个输入端虚短是指 。 10、为判断放大电路中引入的反馈是电压反馈还是电流反馈，通常令输出电压为零，看反馈是否依然存在。若输出电压置零后反馈仍然存在则为 。 11、仅存在于放大电路的直流通路中的反馈称为 。 12、通用集成运放电路由输入级、中间级、 和 四部分组成。 13、集成运放的同相输入端和反相输入端中的“同相”和“反相”是指运放的 和 的相位关系。 14、在学习晶体三极管和场效应管的特性曲线时可以用类比法理解，三极管的放大工作区可与场效应管的 区相类比，而场效应管的可变电阻区则可以和三极管的 相类比。 二、单项选择题（共10题，每题 2 分，共 20分；将正确选项的标号填在答题纸上） 1、稳压二极管的反向电流小于min z I 时，稳压二极管 。 A ：稳压效果变差 B ：仍能较好稳压，但稳定电压变大 C ：反向截止 D ：仍能较好稳压，但稳定电压变小 2、如果在PNP 型三极管放大电路中测得发射结为正向偏置，集电结反向偏置，则此管的工作状态为 。 A ：饱和状态 B ：截止状态 C ：放大状态 D ：不能确定 3、已知两只晶体管的电流放大系数β分别为50和100，现测得放大电路中这两只管子两个电极的电流如图1所示。关于这两只三极管，正确的说法是 。
UNIT1 1．Why does the speaker urge people to be patient? Because he understands that the war is long and tough. it is not to end in months but in years. he tells the people there that however long the war last, the final victory belongs to Britain. but at the same time he makes it clear that not everyday is an opportunity to take action. they have yet to wait and persevere. 2．why does the speaker advise the British people to treat triumph and disaster in the same way? Because he thinks that both triumph and disaster are deceptive in that people can make things out far worse than they really are when they are in triumph. what is the change in the widespread mood referred to in p5? When Britain came under the heavy air attacks by Germany .many other nations thought that Britain was finished. As the country stood the ordeal to their great surprise, those nations changed their view. 3．why does the speaker change darker into sterner? Because he has a strong conviction of victory. The 2terms have different implications. when used in the text to refer to the days of war, ”darker days” emphasizes the negative aspect of the event and shows the user’s pessimism.’ sterner days’ ,though identical in its reference ,suggests optimism and pride in having the chance to rise the challenge. 4．Do you think the speaker had achieved his purpose by the end of his speech? Yes, I do. By paying a visit to Harrow School and making a speech there, Churchill not only encouraged the audience of his speech but the British people in general to continue to fight rather than surrender to their enemy. UNIT2 1. Why does the writer describe his experience at the bank?
Unit1 1. She doesn ' t seem to get along with her new classmates. 2. I ' d been out of touch with Mary for year, but I managed to reach her by phone yesterday. 3. The veteran enjoys showing off his medals to everyone who visits him. 4. He husband seems very much opposed to her going abroad. 5. As Thomas couldn 'set ttle down in his job, his parents were very worried. 6. I always have all kinds of bits and pieces in my pockets. 7. Her mother pulled a few strings to get her into the business circle. 8. I hope the food is to your liking. 9. I told the boys off for making so much noise. Unit2 1. He resolved to work on the complicated project immediately. 2. They saw an old man knocked over by a car coming from the opposite direction. 3. He walked unsteadily / stumbled along in the dark, groping for the light-switch. 4. After three month ' s illness, he found it difficult to rise to his feet again. 5. Owing to the staff shortage, the task could not be fulfilled on schedule. 6. During the period of depression, the company was running into financial difficulties. 7. When the blind girl got on the crowded bus, the passengers made room for her. 8. He at last managed to hold on to the rock on the cliff and stopped himself from slipping. Unit3
Key to Exercises of College English Book 2 Unit 1 ★Text A Vocabulary I. 1.1) insert 2) on occasion 3) investigate 4) In retrospect 5) initial 6) phenomena 7) attached 8) make up for 9) is awaiting 10) not…in the least 11) promote 12) emerged 2. 1) There is a striking contrast between the standards of living in the north of the country and the south. 2) Natural fiber is said to be superior to synthetic fiber. 3) The city’s importance as a financial center has evolved slowly. 4) His nationality is not relevant to whether he is a good lawyer. 5) The poems by a little-known sixteenth-century Italian poet have found their way into some English magazines. 3. 1) be picked up, can’t accomplish, am exaggerating 2) somewhat, performance, have neglected, they apply to 3) assist, On the other hand, are valid, a superior II. 1. 1) continual 2) continuous 3) continual 4) continuous 2. 1) principal 2) principal 3) principle 4) principles 5) principal III. 1. themselves 2. himself/herself 3. herself/by herself/on her own 4. itself 5. ourselves 6. yourself/ by yourself/on your own Comprehensive Exercise I. Cloze 1. 1) contrast 2) exaggerating 3) priority 4) on the other hand 5) promoting 6) pick up 7) assist 8) accomplish 9) on occasion 10) neglecting 11) worthwhile 12) superior 2. 1) end 2) perform 3) facing 4) competent 5) equipped 6) designed 7) approach 8) rest 9) definitely 10) quality II. Translation 1.1) It takes an enormous amount of courage to make a departure from the tradition. 2) Tom used to be very shy, but this time he was bold enough to give a performance in front of a large audience. 3) Many educators think it desirable to foster the creative spirit in the child at an early age. 4) Assuming (that) this painting really is a masterpiece, do you think it’s worthwhile to buy/purchase it? 5) If the data is statistically valid, it will throw light on the problem we are investigating. 2. To improve our English, it is critical to do more reading, writing, listening and speaking. Besides, learning by heart as many well-written essays as possible is also very important.
大学综英第三版第四册课后翻译答案(完整版) -CAL-FENGHAI-(2020YEAR-YICAI)_JINGBIAN
第二单元 1.玛丽看到一个贼眉鼠眼的男人走进邻居家里。 Mary saw a shifty-eyed man walking into a neighbor’s house. 2.鲍勃总是嘲笑我对服饰的眼光。 Bob always sneers at my taste in clothes. 3.打探别人的秘密是不礼貌的。 It is impolite to pry into other’s secrets. 4.我想克里斯想要抢我的饭碗。 I think Chris is after my job. 5.她看到克里斯给他使的眼色，说话的声音便越来越小了。 She trailed off, silenced by the look Chris gave her. 6.那些树枝干而易断。 The branches were dry and brittle. 7.收音机老是发出噼里啪啦的声响，我们几乎听不清里面说些什么。 The radio cracked so much that we could hardly hear what was said. 8.地面向海倾斜。 The land slopes down to the sea. 9.他的口袋里鼓鼓囊囊的塞满了钞票。 His pockets were bulging with money. 10.我不得不和出租车司机就车费讨价还价。 I had to haggle with the taxi driver over the fare. 第三单元 1.这样的好机会千载难逢。 An opportunity as good as this arises/occurs only once in a blue moon. 2.这个孩子因为私自拿了母亲包里的钱而觉得十分愧疚。 The boy felt guilty for taking money from his mother’s handbag without permission. 3.她知道他的话一句真的也没有。 She did not give credence to a single word of his story. 4.一般来说，老师对学生的错误都比较宽容。 Generally speaking, teachers are tolerant of their students’ mistakes. 5.我想当然地以为你会跟我们一起来，于是就给你买了票。 I took it for granted that you’d want to come with us, so I bought you a ticket. 6.由于经理的不断劝导，工作人员很快就改掉了迟到的坏习惯。 Thanks to the manager’s repeated counseling, the staff soon broke the bad habit of coming late to work. 7.他现在对她发火，但不久会原谅她的。这只是几小时的事，仅此而已。 He’s furious with her now, but he’ll forgive her soon. It’s just/only a matter of a few hours, that’s all.第四单元 第一部分 1.只有通过调查我们才有发言权。 Only after investigation can we have the right to speak. 2.我们绝不应当盲从。 On no account should we follow others blindly. 3.他绝不是担任这项工作的最佳人选。 By no means is he the best person for the job.
模拟电子技术基础试题汇总 1.选择题 1．当温度升高时，二极管反向饱和电流将 ( A )。 A 增大 B 减小 C 不变 D 等于零 2. 某三极管各电极对地电位如图所示，由此可判断该三极管( D ) A. 处于放大区域 B. 处于饱和区域 C. 处于截止区域 D. 已损坏 3. 某放大电路图所示.设V CC>>V BE, L CEO≈0，则在静态时该三极管 处于( B ) A.放大区 B.饱和区 C.截止区 D.区域不定 4. 半导体二极管的重要特性之一是( B )。 ( A)温度稳定性 ( B)单向导电性 ( C)放大作用 ( D)滤波特性 5. 在由NPN型BJT组成的单管共发射极放大电路中，如静态工 作点过高，容易产生
( B )失真。 ( A)截止失真( B)饱和v失真( C)双向失真( D)线性失真 6.电路如图所示，二极管导通电压U D＝0.7V，关于输出电压的说法正确的是( B )。 A：u I1=3V，u I2=0.3V时输出电压为3.7V。 B：u I1=3V，u I2=0.3V时输出电压为1V。 C：u I1=3V，u I2=3V时输出电压为5V。 D：只有当u I1=0.3V，u I2=0.3V时输出电压为才为1V。 7.图中所示为某基本共射放大电路的输出特性曲线，静态工作点由Q2点移动到Q3点可 能的原因是 。 A：集电极电源+V CC电压变高B：集电极负载电阻R C变高 C：基极电源+V BB电压变高D：基极回路电阻 R b变高。
8. 直流负反馈是指( C ) A. 存在于RC耦合电路中的负反馈 B. 放大直流信号时才有的负反馈 C. 直流通路中的负反馈 D. 只存在于直接耦合电路中的负反馈 9. 负反馈所能抑制的干扰和噪声是( B ) A 输入信号所包含的干扰和噪声 B. 反馈环内的干扰和噪声 C. 反馈环外的干扰和噪声 D. 输出信号中的干扰和噪声 10. 在图所示电路中，A为理想运放，则电路的输出电压约为( A ) A. －2.5V B. －5V C. －6.5V D. －7.5V 11. 在图所示的单端输出差放电路中，若输入电压△υS1=80mV, △υS2=60mV,则差模输 入电压△υid为( B ) A. 10mV B. 20mV C. 70mV D. 140mV 12. 为了使高内阻信号源与低阻负载能很好地配合，可以在信 号源与低阻负载间接入 ( C )。 A. 共射电路 B. 共基电路