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机械专业-面试题附加英语面试题

机械专业-面试题附加英语面试题
机械专业-面试题附加英语面试题

46.计算机怎么实现微分积分?47.折叠伞用到什么机构?

48.自行车除了链传动还能用什么传动方式?49.二极管P-N 三级管有几个P-N 结极性是什么?50.伺服电机的相关问题?51.plc的相关问题

52.指针C语言问题53.皮带轮传动

54.CAD CAM CAE 的概念55.平面有几种加工方法?

56.传感器分类灵敏度概念57.大学期间那个课程学的比较好58.切削时候怎么断屑

59.粗糙度的几种表示方法,符号60.高波信号(噪声)怎么避免(电工学)61.大概讲讲面向对象编程C++范围62.加工平面的方法及精度分析

63.测试技术的动态特性64.柴油机的发动原理

进气,压缩,燃烧膨胀,排气冲程。65.三维数字建模问题66.怎么加工齿轮展成法举例说明

67.中间继电器的工作原理

线圈通电,动铁芯在电磁力作用下动作吸合,带动动触点动作,使常闭触点分开,常开触点闭合;线圈断电,动铁芯在弹簧的作用下带动动触点复位。

68.自锁和传感器的相关知识举例和概念69.TRIS 举例

70.毕设的相关问题(开放性问题)

71.分析凸轮机构的自锁72.怎么在战火钢上加工方孔

73.曲柄摇杆的死点是自锁的原因不

74.先进加工技术方面的举例

75.一个是稳态误差举例76.一个是把旋转运动转换直线运动的机构

77.微机方面的,FLASH 存储器的特点78.外罗纹的切制方法

79.机床光杠和丝杠的作用

两者都是把走刀箱的动力传递给溜板箱的传动部件.它们的区别就是光杠控制自动进给,而丝杠控制螺纹加工时的进给.光杠的传动原理是利用蜗轮蜗杆副.而丝杠是利用螺旋副的原理.光杠的传动比丝刚杠要复杂,而丝杠的精度要高.两者在走刀箱中使用相同的操纵机构.

80.渐开线齿轮特点

81.另一个是数控插补82.三极管的三个极性是什么(电工学)

三个极分别叫基极、集电极和发射极,

83.完全定位和不完全定位84.数控机床的滑轨为什么需要卸载,怎样卸载

85.什么叫电主轴,怎样调速

86.用带链减速器组成一个系统87.为什么要用拉氏变换

88.刀具磨损的阶段

89.装备图上都标注什么尺寸90.什么是砂轮的自锐性

91.将220V 的交流电变成直流的+5V 电压,如何实现92.有链,齿轮,带传动,问从电机到工作机的传动顺序,及理由

93.控制工程中为什么要引入拉普拉斯变换?你知道还有哪些变换?

94.什么是高副,低副?什么是串行通信,并行通信,并举例?

95.比较带传动和齿轮传动的运用场合?什么是测试系统的静态指标?

96.为什么混叠、电焊与气焊的区别

97.矿泉水瓶是怎样制造的,其螺纹又是怎么制造的,

98.解释超静定概念,举例、

99.测量温度的传感器有哪些

100.切割机的使用场合

i am from luoyang,a beautiful city in henan province. it is famous as the capital of nine dynasties and enjoy yhe honer that luoyang peony is the best in the world.

luoyang played a very important role in chinese history. so it has a profound cultural background and many great heritagesites have been well reverved. such as longmen grotto, one of the three grottoes in china ang white horse temple, being regarded as the cradle of chnese buddhism.

luoyang peony is world-famous. every year, many tourists travel to luoyang to see the beauty of peony .the people in my hometown are friendly, they welcome the travellers from all over the world.

i like my hometown very much

if luckily i got the chance to learn environment engineering in tongji university, i will concentrate on the study and reserch in this field. first i will hard to learn the theoritical knowledge,constucting a solid base for my future work; second i would like to do some practical work with the help of the supervisor ang classmate .and through this ,i can get something that cannot be acquired from the textooks. i believe after 2 years of learning ,my dream will finally come true..

Self-introduction:

Good morning, everyone! I am glad to be here for this interview. First, let me introduce myself to you. My name is Qin Jiayin. I was born on April 23, 1981. I am a local person.I am graduating from Jilin Normal University (应该是这样译) this June. I major in Chinese literature. I hope I could get the opportunity to finish my postgraduate courses in Jilin University which I have desired for a long time. I have the confidence because I have such ability! I am a girl who is fervent, outgoing and creative. At the same time, I think I am quick in mind and careful in everything. I am looking forward to my postgraduate studies and life. I will soon prove that your decision of choosing me is the wisest. Thank you for giving me such a valuable opportunity!

Reasons for taking postgraduate exams:

First of all, I love my major. Chinese literature is the symbol of the start of Chinese literary modernization. It plays an important part in modernization of our citizens’ thoughts. What’s more, modern literature is very close to our daily life and it can deeply reflect the styles and features of our society. I am fascinated by the great masters’ re freshing or warm or profound styles as well. But I am not easily satisfied with such superficial knowledge. I hope I could have a better understanding in modern literature by studying further. This is a very important reason for me to take the postgraduate exams.

Next, I love the feeling in the university. It is full of youthful spirit. And I am deeply attracted by the scholarly atmosphere. And the most important, it’s my great honor to open my ears to your teaching. Finally, I want to talk about a very practical problem. That is my dream of becoming a teacher in the university. I want to realize my dream and make myself to be a well-qualified person. I think the postgraduate studies can enrich my knowledge and make me competent in my future job.

That’s m y simple and clear reasons why I took the postgraduate exams.

My university:

I’m graduating form Jilin Normal University this June which has a history of 50 years. It shares many same characteristics with Jilin University. Both of them have a refreshing and scholarly atmosphere. Four years’ studying there made me an independent, optimistic and strict girl. I appreciate the education my university gave me.

Thank you for your time!

1. 什么是刀具前角,在哪个平面内测量?

2. 轴承分哪几种,简单介绍一下?

3. 渐开线齿廓有哪些特征?

4. 齿轮变位有哪几种,介绍一下它们的特征

5. 什么是六点定位原理?

6. 什么是过定位、欠定位,是否都允许,为什么,各举个例子

7. 火车开来和离去的声音不同,为什么?8. 行走机器人的行走方式?

9. 齿轮的加工方式?1、带传动和齿轮传动的特点,及应用场合

数控机床的题,还有一个同学被问到孔的加工方法,什么是传感器

10. 刀具常用材料?什么是自锁。产生原因,应用

位移,力传感器举例

弹簧的弹性系数跟什么有关

齿轮怎么加工,塑料齿轮怎么加工,其原料是什么样的11. 常用的强化方法?

常用的平面加工方法有什么?精度的高低12. 改变运动方向的方式?

13. 哪几种传动可以实现过载保护?

14. 什么是工业机器人?15. 车、刨、磨的加工范围?

16. 什么是加工硬化?

17. 设计整个装置怎么做?

18. 柔性制造系统?19. 传动系统有哪些?

20. 夹具的作用?21. 常用的孔的加工方法?22. 什么是正反馈、负反馈并举例?

23. 自行车为什么会掉链子,上链子时是先上大轮还是小轮,为什么?24. 特种加工有哪些?

25. 8051单片机能不能读16位的A/D转换器,怎样读?26. 什么是定位误差?

27. 什么是封闭环、增环、减环?28. 什么是最大实体尺寸,最小实体尺寸?

29. 怎样用弱电控制强电?30. 怎样避免强电对弱电的干扰?

31. 退火、正火、淬火有什么差别?32. 什么是磨削烧伤,怎样减少磨削烧伤?

33. 数控机床靠什么定位?34. CAD/CAM中关于镜像的问题?

35. 什么是系统误差,有哪些,拣其中之一介绍下?36. 常用的传感器有哪些?简要说一下其中之一的原理?37. 材料力学中的四个强度理论?

38. 螺栓、带传动、链传动、滚动轴承预紧为什么?39. 齿轮传动---链传动----带传动的顺序?

40. 齿轮轴承的润滑方式?41. 齿轮的失效形式?

42. 摩擦有哪些类型?43. 运算放大器

44. 稳定性判据(劳斯等)、及串联校正(超前、滞后、超前滞后)?

45. PID各字母的含义?

插齿机分为哪几个运动?

三极管的工作原理,哪三个工作状态?

常用的道具形式有哪几种

第一次:什么是高副,低副?什么是串行通信,并行通信,并举例?

第二次:比较带传动和齿轮传动的运用场合?什么是测试系统的静态指标?

我同学抽的及问到的有:为什么混叠、电焊与气焊的区别、矿泉水瓶是怎样制造的,其螺纹又是怎么制造的,解释超静定概念,举例、测量温度的传感器有哪些、切割机的使用场合

1.数控机床滑枕为什么要配重?怎样配重?说出方案

2.什么是电主轴?电主轴怎样调速?具体方法

1. 列举出常用的刀具材料(P27)

2. 硬质合金刀具在切削时参数变化对切削性能的影响

3. 什么是工艺系统?原始误差?工艺系统的原始误差有哪些?(P133)

4. 工艺过程的统计分析(P161例题,问合格率、不合格率多少,能否修复)

5. 一个套筒零件定位误差的计算问题,自己选择方法,如果不合格,再改进,可以看一下书上的例题。

6. 精基准的选择原则?(P196)

7. 零件加工过程划分加工阶段的目的?(P200)

8. 工序顺序的安排?(P202)

单一工件的尺寸链问题(可参考P213/214例题)

1. 列举出常用的刀具材料(P27)

2. 硬质合金刀具在切削时参数变化对切削性能的影响

3. 什么是工艺系统?原始误差?工艺系统的原始误差有哪些?(P133)

4. 工艺过程的统计分析(P161例题,问合格率、不合格率多少,能否修复)

5. 一个套筒零件定位误差的计算问题,自己选择方法,如果不合格,再改进,可以看一下书上的例题。

6. 精基准的选择原则?(P196)

7. 零件加工过程划分加工阶段的目的?(P200)

8. 工序顺序的安排?(P202)单一工件的尺寸链问题(可参考P213/214例题)

. 刀具磨损过程可分为哪几个阶段,每个阶段介绍?

2. 提高传动链精度的措施?

3. 标准正态分布图画法及工序能力的计算

4. 磨削烧伤的原因及预防措施

5. 定位误差分析:用心轴定位、下母线定位,可涨心轴定位。

6. 尺寸链的计算

7. 齿轮制造的两种方法及所使用的机床?

机械设计、机械原理

1. 斜齿轮是以哪个面作为计算标准,哪个面作为标准值?

2. 电动机后跟带传动减速、链传动减速、齿轮传动减速这三个的顺序问题

3. 对一偏置的曲柄滑块机构进行分析

1. 写出车床能加工的几种零件表面?

2. 刀具的正交坐标系是有那三个参考平面表示的,各平面的含义?

3. 什么是误差复映?形状、位置误差有复映吗?怎样减少误差复映?

4. 刀具的几何参数和切削用量变化时对切削温度的影响?

5. 一尺寸链的计算

机械设计和机械原理

1. 根据图式画出机构结构简图,并求自由度

2. 判断一四杆机构为什么机构(双曲柄、双摇杆、曲柄摇杆)

3. 一个蜗轮蜗杆的传动方向和力的判断

4. 方案a电动机----蜗杆减速----齿轮减速----带传动,方案b电动机---齿轮减速----蜗杆减速---带传动,如果方案a的强度刚好足够,那么b是否合适,为什么?

机精

1. 形状误差的名称和表示方法?

2. 什么时候用基轴制?

1.3气压传动的工作原理

气压传动工作原理是利用空气压缩机把电动机或其他原动机输出的机械能转换为空气的压力能,然后在控制元件的控制下,通过执行元件把压力能转换为直线运动或回转运动形式的机械能,从而完成各种动作并对外做功。具体例子:图11.1为气动剪切机的气动系统工作原理图。图示位置为工料被剪前,即非工作位置。当工料5由上料装置送入剪切机并到达规定位置时,行程阀8的顶杆受压使阀内通路打开,气控换向阀7的控制腔便与大气相通,阀芯受弹簧力作用而下移,由空气压缩机4产生并经过初次净化处理后储藏在储气罐1中的压缩空气,经分水滤气器11、减压阀10和油雾气9及气控换向阀7,进入气缸6的下腔;汽缸上腔的压缩空气通过气控换向阀7排入大气。此时,气缸6活塞向上运动,带动剪刀将工料5切断。当工料剪下后,随之与行程阀8脱开,行程阀在弹簧作用下复位,阀芯封住排气通道,气控换向阀7的控制腔C中的气压升高,使阀芯上移,B口与P口相通,A口与O相通,气路变换。此时压缩空气便进入气

缸6的上腔,而下腔空气则通过气控控制阀7上的A从O口排气,活塞下移,带动剪刀复位准备第二次剪切工料。

图1.3.1

1.4气压传动的组成

图11.1为典型气压传动系统图。与液压传动系统相似,也是由四部分组成。

(1)气源装置:是将原动机的机械能转变为气体的压力能。包括空气压缩机。

(2)执行元件:是将气体的压力能转变为机械能。包括各种气缸和气马达等。

(3)控制元件:用以控制系统中空气的压力、流量和流动方向以及执行元件的工作程序,以便使执行机构完成预定的动作。包括各种压力、流量、方向控制阀等。

(4)辅助元件:保证气压系统正常工作所必需的部分。包括油水分离器、干燥器、过滤器等气源净化装置以及贮气罐、消声器、油雾器、管网、压力表及管件等。

1.5 整体方案

图1-1 整体外观图

1-马达轴;2-转子;3-定子;4-内齿轮;5-行星架;6,7-牙嵌离合器【等边梯形齿】;

8-牙嵌离合器【锯齿型齿】;9-扳手轴。

本气动扳手可装成夹紧扳手或者松开扳手,两者的主要区别为:气动马达得转子和定子得安装方向相反。本扳手采用两套牙嵌离合器,在空载时和加载后可分别使扳手轴自动获得高,低两种转速。

空载时,马达轴1的旋转运动经过一级行星齿轮减速器后传至行星架5,然后接住等边梯形牙嵌离合器

6和7传至扳手轴9使其高速回转。此时由于牙嵌离合器8【与轴9花键连接】得转速大于内齿轮4得转速,因此牙嵌离合器8便沿锯齿形牙的斜面打滑。

加载后,牙嵌离合器6和7过载打滑,马达轴1得运动便经由二级行星齿轮减速传至内齿轮4,并

通过牙嵌离合器8将运动传至扳手轴9,使其低速回转。此时由于内齿轮4是主动件,牙嵌离合器8是从动件【与告诉回转时正好相反】因此由锯齿形牙的垂直面传递扭矩,并继续迫使牙嵌离合器6和7过载打滑。对于夹紧扳手,牙嵌离合器8只能传递右旋扭矩;对于松开扳手,只能传递左旋扭矩。

1.6方案选择

本设计提供两套方案:

第一套方案:采用液压传动方式

第二套方案:采用气压传动方式

两种方案的优缺点如下:

第一套方案;

1)液压元件制造精度要求高由于元件的技术要求高和装配比较困难,使用维护比较严格。

2)实现定比传动困难液压传动是以液压油为工作介质,在相对运动表面间不可避免的要有泄漏,同时油液也不是绝对不可压缩的。因此不宜应用在在传动比要求严格的场合,例如螺纹和齿轮加工机床的传动系统。

3)油液受温度的影响由于油的粘度随温度的改变而改变,故不宜在高温或低温的环境下工作。

4)不适宜远距离输送动力由于采用油管传输压力油,压力损失较大,故不宜远距离输送动力。

5)油液中混入空气易影响工作性能油液中混入空气后,容易引起爬行、振动和噪声,使系统的工作性能受到影响。

6)油液容易污染油液污染后,会影响系统工作的可靠性。

7)发生故障不易检查和排除。

第二套方案:

1、空气容易获取、且工作压力低,用过的空气可就地排放,无需回收管道。

2、气的粘性小、流动阻力损失小,便于集中供气和远距离输送。

3、气动执行元件运动速度高。

4、气动系统对环境的适应能力强,能在温度范围很宽,潮湿和有灰尘的环境下可靠工作,稍有漏泄不会污染环境,无火灾爆炸危险,使用安全。

5、结构简单、维护方便、成本低廉。

6、气动元件寿命长。

7、气动元件的执行输出比液压小、运动较快、适应性强、可在易然、易爆、多沉、潮湿、冲击的恶劣环境中工作,不污染环境,工作寿命长,构造简单,便于维护,价格低廉。

所以本次设计采用气动方式。

1.7气动机械的优势特点

气动机械排放的是空气及微量冷凝水,在躁音得以控制的情况下,气动机械如下特点电动机械无法比拟。

1.三防:即防潮、防爆、防尘,适应恶劣的工作环境。

2.在相同转速及负载条件下, 气动机械比电动机械占用空间小得多。

3.可无级调速。根据需要,通过调节供气流量、压力,实现无级调速。

4.可实现远控、自控。

5.过载自动保护。在一定范围内,超载自动停车,降载自动启动。从而自动保护。对极限扭矩有衡定要求的场合特别适宜。

综上所述,气动机械在当今世界,特别是我国国内,有待开拓的空间巨大。

1.3气压传动的工作原理

气压传动工作原理是利用空气压缩机把电动机或其他原动机输出的机械能转换为空气的压力能,然后在控制元件的控制下,通过执行元件把压力能转换为直线运动或回转运动形式的机械能,从而完成各种动作并对外做功。具体例子:图11.1为气动剪切机的气动系统工作原理图。图示位置为工料被剪前,即非工作位置。当工料5由上料装置送入剪切机并到达规定位置时,行程阀8的顶杆受压使阀内通路打开,气控换向阀7的控制腔便与大气相通,阀芯受弹簧力作用而下移,由空气压缩机4产生并经过初次净化处理后储藏在储气罐1中的压缩空气,经分水滤气器11、减压阀10和油雾气9及气控换向阀7,进入气缸6的下腔;汽缸上腔的压缩空气通过气控换向阀7排入大气。此时,气缸6活塞向上运动,带动剪刀将工料5切断。当工料剪下后,随之与行程阀8脱开,行程阀在弹簧作用下复位,阀芯封住排气通道,气控换向阀7的控制腔C中的气压升高,使阀芯上移,B口与P口相通,A口与O相通,气路变换。此时压缩空气便进入气缸6的上腔,而下腔空气则通过气控控制阀7上的A从O口排气,活塞下移,带动剪刀复位准备第二次剪切工料。

图1.3.1

1.4气压传动的组成

图11.1为典型气压传动系统图。与液压传动系统相似,也是由四部分组成。

(1)气源装置:是将原动机的机械能转变为气体的压力能。包括空气压缩机。

(2)执行元件:是将气体的压力能转变为机械能。包括各种气缸和气马达等。

(3)控制元件:用以控制系统中空气的压力、流量和流动方向以及执行元件的工作程序,以便使执行机构完成预定的动作。包括各种压力、流量、方向控制阀等。

(4)辅助元件:保证气压系统正常工作所必需的部分。包括油水分离器、干燥器、过滤器等气源净化装置以及贮气罐、消声器、油雾器、管网、压力表及管件等。

1.5 整体方案

图1-1 整体外观图

1-马达轴;2-转子;3-定子;4-内齿轮;5-行星架;6,7-牙嵌离合器【等边梯形齿】;

8-牙嵌离合器【锯齿型齿】;9-扳手轴

本气动扳手可装成夹紧扳手或者松开扳手,两者的主要区别为:气动马达得转子和定子得安装方向相反。本扳手采用两套牙嵌离合器,在空载时和加载后可分别使扳手轴自动获得高,低两种转速。

空载时,马达轴1的旋转运动经过一级行星齿轮减速器后传至行星架5,然后接住等边梯形牙嵌离合器

6和7传至扳手轴9使其高速回转。此时由于牙嵌离合器8【与轴9花键连接】得转速大于内齿轮4得转速,因此牙嵌离合器8便沿锯齿形牙的斜面打滑。

加载后,牙嵌离合器6和7过载打滑,马达轴1得运动便经由二级行星齿轮减速传至内齿轮4,并

通过牙嵌离合器8将运动传至扳手轴9,使其低速回转。此时由于内齿轮4是主动件,牙嵌离合器8是从动件【与告诉回转时正好相反】因此由锯齿形牙的垂直面传递扭矩,并继续迫使牙嵌离合器6和7过载打滑。

对于夹紧扳手,牙嵌离合器8只能传递右旋扭矩;对于松开扳手,只能传递左旋扭矩。

1.6方案选择

本设计提供两套方案:

第一套方案:采用液压传动方式

第二套方案:采用气压传动方式

两种方案的优缺点如下:

第一套方案;

1)液压元件制造精度要求高由于元件的技术要求高和装配比较困难,使用维护比较严格。

2)实现定比传动困难液压传动是以液压油为工作介质,在相对运动表面间不可避免的要有泄漏,同时油液也不是绝对不可压缩的。因此不宜应用在在传动比要求严格的场合,例如螺纹和齿轮加工机床的传动系统。

3)油液受温度的影响由于油的粘度随温度的改变而改变,故不宜在高温或低温的环境下工作。

4)不适宜远距离输送动力由于采用油管传输压力油,压力损失较大,故不宜远距离输送动力。

5)油液中混入空气易影响工作性能油液中混入空气后,容易引起爬行、振动和噪声,使系统的工作性能受到影响。

6)油液容易污染油液污染后,会影响系统工作的可靠性。7)发生故障不易检查和排除。

第二套方案:

1、空气容易获取、且工作压力低,用过的空气可就地排放,无需回收管道。

2、气的粘性小、流动阻力损失小,便于集中供气和远距离输送。

3、气动执行元件运动速度高。

4、气动系统对环境的适应能力强,能在温度范围很宽,潮湿和有灰尘的环境下可靠工作,稍有漏泄不会污染环境,无火灾爆炸危险,使用安全。

5、结构简单、维护方便、成本低廉。

6、气动元件寿命长。

7、气动元件的执行输出比液压小、运动较快、适应性强、可在易然、易爆、多沉、潮湿、冲击的恶劣环境中工作,不污染环境,工作寿命长,构造简单,便于维护,价格低廉。

所以本次设计采用气动方式。

1.7气动机械的优势特点

气动机械排放的是空气及微量冷凝水,在躁音得以控制的情况下,气动机械如下特点电动机械无法比拟。

1.三防:即防潮、防爆、防尘,适应恶劣的工作环境。

2.在相同转速及负载条件下, 气动机械比电动机械占用空间小得多。

3.可无级调速。根据需要,通过调节供气流量、压力,实现无级调速。

4.可实现远控、自控。

5.过载自动保护。在一定范围内,超载自动停车,降载自动启动。从而自动保护。对极限扭矩有衡定要求的场合特别适宜。

综上所述,气动机械在当今世界,特别是我国国内,有待开拓的空间巨大。

Good morning,everyone! I am glad to be here for this interview. First,let me introduce myself to you. My name is Li Ming. I was born on April 23,1981. I am a local person. I am graduating from University this June. I major in Chinese literature. I hope I could get the opportunity to finish my postgraduate courses in Peking University which I have desired for a long time. I have the confidence because I have such ability! I am a girl who is fervent(热情的),outgoing and creative. At the same time,I think I am quick in mind and careful in everything.

I am looking forward to my postgraduate studies and life. I will soon prove that your decision of choosing me is the wisest. Thank you for giving me such a valuable opportunity!

考研复试英语自我介绍范文6:

Good morning/afternoon,my dear teachers (my dear professors)。I am very glad to be here for your interview. My name is ___.I am ___ years old. I come from _______,a very beautiful city. My undergraduate period will be accomplished in _______university in July,2009. And now,I am trying my best for obtaining a key to ________ University.

Generally speaking,I am a hard-working student. I will try my best to finish it no matter how difficult it is. When I was sophomore,I found web design very interesting,so I learned it very hard. To weave a homepage for myself,I stayed with my personal computer for half a month,and I am the first one in my class who own his homepage. Furthermore,I am a person with great perseverance. During the days preparing for the first examination,I insist on running every day,no matter what the weather was like. And just owning to this,I could concentrate on my study and succeeded in the end.

Well,in my spare time,I like basketball,tennis and Chinese chess. Also,English is my favorite. I often go to English corner to practice my oral English on every Thursday,and write compositions to improve my written ability. But I know my English is not good enough,I will continue studying.

Ok,that‘s all,thank you for your attention.

考研复试英语自我介绍范文5:

Good morning,everyone! I am glad to be here for this interview. First,let me introduce myself to you. My name is Qin Jiayin. I was born on April 23,1981. I am a local person.I am graduating from Jilin Normal University this June. I major in Chinese literature. I hope I could get the opportunity to finish my postgraduate courses in Jilin University which I have desired for a long time. I have the confidence because I have such ability! I am a girl who is fervent,outgoing and creative. At the same time,I think I am quick in mind and careful in everything. I am looking forward to my postgraduate studies and life. I will soon prove that your decision of choosing me is the wisest. Thank you for giving me such a valuable opportunity!

Reasons for taking postgraduate exams:

First of all,I love my major. Chinese literature is the symbol of the start of Chinese literary modernization. It plays an important part in modernization of our citizens‘ thoughts. What’s more,modern literature is very close to our daily life and it can deeply reflect the styles and features of our society. I am fascinated by the great maste rs‘ refreshing or warm or profound styles as well. But I am not easily satisfied with such superficial knowledge. I hope I could have a better understanding in modern literature by studying further. This is a very important reason for me to take the postgraduate exams.

Next,I love the feeling in the university. It is full of youthful spirit. And I am deeply attracted by the scholarly atmosphere. And the most important,it‘s my great honor to open my ears to your teaching.

Finally,I want to talk about a very practical problem. That is my dream of becoming a teacher in the university. I want to realize my dream and make myself to be a well-qualified person. I think the postgraduate studies can enrich my knowledge and make me competent in my future job.

Th at‘s my simple and clear reasons why I took the postgraduate exams.

My university:

I‘m graduating form Jilin Normal University this June which has a history of 50 years. It shares many same characteristics with Jilin University. Both of them have a refresh ing and scholarly atmosphere. Four years’ studying there made me an independent,optimistic and strict girl. I appreciate the education my university gave me.

Thank you for your time!

考研复试英语自我介绍范文4:

Good morning,teachers,I am honored to be informed to have this interview.

Introduce yourself

First let me introduce myself,my name is XX,23 years old,and David is my English name. I am open-minded,easy to adapt,compatible with my friends,and willing to help others.

Introduce your college

I studied in XX University. Although it is not well know,I still appreciate it,because it offers me a chance to develop my abilities. During my college years,I have made rapid and great progress in many areas,as a student,I work very hard,and obtain scholarship many times,as a monitor,I work earnestly,also gain good comments from teachers and classmates,working as a member of Student Union,I strive to finish any assignment perfectly. In a word,I learned a lot in my college life.

Introduce your family

In my family,there are three members,my farther,my mother,and I. My parents are workers,my father works very hard,and he is always fully occupied,so most of the housework is done by my mother,of course,while I am at home,I would help her. I love my parents and they love me,too. When I make a success,they are more excited than me,and support me to do better. Even though I failed,instead of blaming,they always share sorrow with me,and encourage me not to give up. During my preparation for graduate examination,the support from my family is always my momentum. Parents‘ love is unselfish,I am deeply affected,so I will do all what I can to repay them.

Introduce your hometown

My hometown is XX,a young city in XX Province. It is famous for its XX and XX. There are great scenes here,XX,XX,XX,and so on. Each year,many people come here for tour and investment. So I believe that,with the joint efforts of every person,a better future of XX is coming (round the corner)。

Introduce your reason for preparing the postgraduate exam

During the past four years,I have learned a lot of professional knowledge and practical skills,but gradually,I realize it is not enough. In my opinion,further study is actually urgent for me to realize and finally achieve self-value. Life is precious,it is necessary to catch any opportunity for self-development,especially in the competitive modern society. Therefore,I prefer to go on for further education.

Why do you choose to study in our department?

I am deeply impressed by the academic atmosphere when connecting to the web site of your department. In addition,I am attracted by the process of XX,and want to do something for XX. As the proverb says ‘process is the activity of today and the assurance of tomorr ow.’ If I got a chance to study here,I would like to continue to accept professional training,in order to get ready for working in the future. I hope I can achieve my goal soon. About your future plans:

What do you expect to achieve during your study if you are enrolled into this institute?There must be many things to learn if I were enrolled into my ideal research field. I hope I can build up a systematic view of XX,especially in the fields of XX. Sincerely,my wish is to get a complete comprehension of XX. On the other hand,I am dreaming of the participation of some relevant projects of my major,for this reason,I will get more experience in practice. And what‘s more,I expect to continue my study for doctorate degree,if it is possible. In a word,I am looking forward to making up a solid foundation for future profession which is based on three years of study here.

Do you have any hobbies?

In my spare time,I like reading books,collecting cards and coins,playing volleyball,communicating with friends,and so on.

I also like English very much,I am fond of watching English films and listening to English songs,I passed College English Test Band six in September,2003,I do believe there is still a long way for me to learn English well enough,however I will not shrink back,Because I realize that English is a bridge connected our country with the outside world. Learning English is the most direct and available method for intercourse among countries and also useful for us to get advanced knowledge and technology from other nations.

考研复试英语自我介绍范文3:

Good morning:

My name is XX,you can also call me Eason,I has such an english name just because the pronunciation of it is like my chinese name. I graduated from this university last year,and major in computer science,I liked computer very much,especially in multimedia technology,and wanted to make some achievement in this field,but when I finished my school,I realized that what I had learned was not enough for this target,I thought it would be great if I can continue my interest in that,so that was why I choose to further my study with a master degree.

Well,in my spare time,I like soccer,pop music,and stamp,being a soccer fan,I always show my love to Manchester United and Ryan Giggs is my favorite. I also like English very much,and had passed Band six this year,but I do think it‘s still a long way to study it,so I wouldn’t give up my English studying,and improve my oral and listening ability.

1. 加工套类零件的定位基准是( D )。

A.端面

B.外圆

C.内孔

D.外圆或内孔

2. 磨刀、调刀、切屑、加油属于单位时间哪部分。( C )

A.基本

B.辅助

C.服务

D.休息

3. 车床主轴轴颈和锥孔的同轴度要求很高,常采用( B )来保证。

A.基准重合

B.互为基准

C.自为基础

D.基准统一

4. 平键连接中,传递转矩是依靠键与键槽的( C )。

A.上、下平面

B.两端面

C.两侧面

D.两侧面与底面

5. 常用的光整加工的方法中只能减少表面粗糙度的是( C )。

A.研磨

B.高光洁度磨削

C.超精加工

D.珩磨

6. 轴类零件加工时最常用的定位基准是( C )。

A.端面

B.外圆面

C.中心孔

D.端面和外圆面

7. 轴类零件定位用的顶尖孔是属于( A )。

A.精基准

B.粗基准

C.互为基准

D.自为基准

8. 定位消除的自由度少于六个,但满足加工精度要求的定位称为( B )。

A.完全定位

B.不完全定位

C.过定位

D.欠定位

9. 试指出下列刀具中,哪些刀具的制造误差不会直接影响加工精度( B )。

A.齿轮滚刀

B.外圆车刀

C.成形铣刀

D.键槽铣刀

10. 车削时,车刀刀尖运动轨迹若平行于工件轴线,则不为(C )。

A.车外圆

B.车螺纹

C.车圆锥面

D. 车孔

二、判断题(判断对错并改正。本大题共10小题,每小题2分,共20分)

11. 铰孔可以提高孔的尺寸精度、减小孔表面粗糙度,还可以对原孔的偏斜进

行修正。(错)

正确答案:做不到对原孔的偏斜进行修正。

12. 所有零件在制定工艺过程时都应划分加工阶段。(错)

正确答案:看具体情况而定。

13. 钻出的孔一般应经扩孔或半精镗等半精加工,才能进行铰孔。(对)

14.拉孔前工件须先制出预制孔。(对)

15.不完全定位消除的自由度少于六个,没有满足加工精度要求。(错)

正确答案:满足加工精度要求。

16. 同种磨料制成的各种砂轮,其硬度相同。(错)

正确答案:可能相同,也可能不同。

17. 单件、小批生产宜选用工序集中原则。(对)

18.滚切直齿圆柱齿轮时,齿轮滚刀的安装轴线应平行于工作台。(错)

正确答案:齿轮滚刀的安装轴线与工作台的角度等于螺旋角。

19.车床主轴的径向跳动不影响加工轴的圆度误差。(错)

正确答案:车床主轴的径向跳动影响加工轴的圆度误差。

20. 磨削烧伤的类型有回火烧伤、淬火烧伤、正火烧伤及退火烧伤。(错)

正确答案:磨削烧伤的类型有回火烧伤、淬火烧伤、退火烧伤。

三、多项选择题(本大题共5小题,每小题2分,共10分)

21.车床主轴的纯轴向窜动对(AD)加工无影响。

A.车内孔

B.车端面

C.车螺纹

D. 车外圆

E.车倒角

22. 滚切直齿圆柱齿轮、滚刀的安装角取决于( AD )。

A 、滚刀的螺旋升角

B 、工件的齿数

C 、滚刀的回转方向 D.滚刀的旋向 E. 工件的回转方向

23. 工艺过程中所采用的基准为工艺基准,按用途可分为( ACDE )。

A. 工序基准

B.工步基准

C.测量基准

D.装配基准

E. 定位基准

24. 反映砂轮特性的五大要素有( ABCDE )。

A.粒度

B.结合剂

C.硬度

D.组织

E.磨料

25. 可以用来铣平面的铣刀有( ABD )。

A.圆柱形铣刀

B.端铣刀

C.键槽铣刀

D.三面刃铣刀

四、作图题(本大题共2小题,每小题5分,共10分)

26.根据六点定位原理,分别给出下列定位元件所消除的自由度。(5分)

正确答案:三爪卡盘消除Y 、Z 方向上的转动和移动,即消除四个自由度。

27. 画出下列零件正确的结构工艺性图。(5分)

五、计算题(本大题共1小题,每小题10分,共10分)

28. 如图轴套零件在车床上已加工好外圆、内孔及各表面,现需在铣床上以端面A 定位,铣出表面C 保证尺寸20-0.2mm ,试计算铣此缺口时的工序尺寸。(10分)

已知:A2=40+0.05 A3=65±0.05 A∑=20-0.2求A

(1)尺寸链图(2分)

(2)判断封闭环A∑=20-0.2(2分)

(3)上下偏差与基本尺寸计算(2分)

AΣ=A+ A2―A3 A =45

BsAΣ= BsA+BsA2-BxA3 BsA=-0.1

BxAΣ= BxA+BxA2-BsA3 BxA=-0.15

(4)入体尺寸标注:44.9-0.05(2分)

(5)校核δ∑= δ+δ2+δ3 = 0.2(2分)

六、简答题(本大题共3小题,每小题5分,共15分)

29. 何谓工艺过程尺寸链?何谓装配尺寸链?(5分)

答:研究机械加工、检测过程中各相关尺寸的关系的尺寸链叫工艺过程尺寸链。(2.5分) 研究机器装配过程中各相关零部件尺寸的关系的尺寸链叫装配尺寸链。(2.5分)

30. 箱体零件的主要技术要求包括哪些方面?(5分)

答: (1)箱体轴承孔的尺寸精度、形状精度和表面粗糙度;(2分)

(2)箱体各轴承孔的相互位置情况; (2分)

(3)箱体主要平面的精度。(1分)

31. 拉削的主运动和进给运动是什么?(5分)

答: (1)主运动是拉刀的直线运动; (2.5分)

(2)进给运动是相邻两排刀齿间的齿升量形成。(2.5分)

七、论述题(本大题共1小题,每小题10分,共10分)

32.结合自己的观点谈谈精基准的选择原则。(10分)

(1)基准重合即定位基准与设计基准重合,以使其减少定位误差。但是有时为了装夹和加工的方便,不得

不采用基准不重合,此时必须解尺寸链重新分配公差。(2.5分)

(2)基准统一在尽可能多的工序中使用统一基准,以减少安装误差和夹具种类。选择: (a) 能最大限度暴

露其它须加工面;(b) 它自身或自身方向上加工量最小;(c) 使用上最好是次要表面。(2.5分)

如:轴类零件以顶尖孔作为统一基准,有利于保证外圆的同轴度及端面与轴线的垂直度要求。

(3)互为基准对于相互位置精度较高的表面,采用互为基准来加工,易于保证位置精度。(2.5分)

如:车床主轴的主轴颈与前端锥孔的同轴度要求很高,常以主轴颈外圆和锥孔互为基准反复加工。(4)自为基准对于须切除薄而均匀的余量的表面采用自为基准加工。(2.5分)

如:磨削车床床身导轨面,由于导轨面淬火层很薄,必须以导轨面本身找正加工。

八、能力测试题(本大题共1小题,共15分)

33.从制定工艺规程的前提和步骤两个方面阐述工艺规程的制定。(15分)

1)工艺规程的定义(5分)

将合理的工艺过程各项内容编成用以指导生产的工艺文件叫做工艺规程。

2)制定工艺规程的前提(5分)

(1)对产品的对象进行调查与分析

(a)了解产品的性能、用途及零件功用:机器的整体性能,应用范围及工作条件,被加工零件在机器中的

应用。

(b)分析产品图纸与技术要求、材料及热处理:图形表达是否清楚;各尺寸及其上下偏差、形状及位置

公差、表面粗糙度指定是否合理;材料的选择及热处理要求是否合理。

(c)分析零件及装配的结构工艺性:零件能否加工,可否采用高生产率的方法加工,是否适合本厂的生

产条件;好不好装配,能否采用装配线装配。否则应对结构进行修改。

(d)加工中的重点、工艺难点与技术发展趋势;

(e)市场供求情况与用户质量意见。

(2)调查本厂的生产条件

(a) 本厂的机床设备及其它工艺装备情况;

(b) 本厂工人的技术水平;

(c) 本厂近期内可能增加的设备。

(3)国家技术政策及同类产品的工艺

国家在不同的时期有不同的技术政策,需要及时加以了解。同时要了解国内外

的先进工艺,必要时加以引进,以提高经济效益。

3)制定工艺规程的步骤(5分)

(1)选定各表面的加工手段(机床、工艺装备);

(2)将这些手段排成合理的程序(加工顺序);

(3)确定各工序的定位基准;

(4)确定各工序的加工余量;

(5)计算必要的工艺尺寸;

(6)计算公式定额;

(7)填写工艺文件;对各工艺方案进行技术经济分析。

典型的英语面试问题

典型的英语面试问题 典型的英语面试问题集锦 First One: Work experience "work experience" is the type of work you"ve done in the past.Ifyou haven"t started working yet you can say "center now I"m stillastudent." or "I"m a recent grad and Ihaven"t started workingyet."In the second sentence, "recent grad" is short for"recentgraduate" and means that you have just finished school. 请告诉我你过去的工作,工作经验就是你过去所做的工作。 如果尚未开始工作,就可以回答“center now I"m stillastudent.”(现在我还是个学生。)或者说“I"m a recent grad and I haven"tstartedworking yet.”(我刚刚毕业,还没有开始工作。)“recentgrad”是“recentgraduate”的缩写,意思是刚刚毕业。 Second One: What"s your greatest weakness?

This is a popular question that western employers like to asktomake candidates nervous! In fact, they ask this to know howyourespond to a difficult question. You shouldn"t answer by ___ingyour greatest weakness since you might not get the job!Instead,you can ___ them something that isn"t directly related tothe jobposition. 你最大的缺点是什么?西方老板特别爱问这个问题,让者感到很紧张。事实上,他问这个问题是看你对棘手问题的反应。你没必要如实回答你的`弱点,因为那有可能让你得不到这份工作。相反,你可以告诉他们一些与工作不直接相关的事情。 Third One: Why do you feel you are qualified for this job? This question is a good opportunity to brag a little bit.Youshould talk about some extra skills you have that maybewasn"tincluded in your resume, or talk about your greatest strengthinmore detail.

英文面试常见问题总结

面试常见37个问题 1."Tell me about yourself" 简要介绍你自己。 2."Why are you interested in this position?" 你为什么对这份工作感兴趣?3."What are your strengths?" 谈谈你的优势? 4."What is Your Biggest Weakness?" 谈谈你最大的弱点是什么? 5."Why do You Feel You are Right for this Position?" 为什么你认为自己适合这个职位? 6."Can you give me the highlights of your resume?" 谈谈你的简历上有些什么值得特别关注的吗? 7."Why did you choose your major?" 你为什么选择这个专业? 8."What are your interests?" 你有哪些兴趣爱好呢? 9."What are your short and long term goals?" 你对于短期和长期的目标是什么?10."Tell me how your friends/family would describe you?" 如果我向你的朋友或者家人询问对你的评价,你认为他们会怎样说? 11."Using single words, tell me your three greatest strengths and one weakness." 用简单的词,描述你的三项最突出的优点和一个缺点。 12."What motivates you to succeed?" 你争取成功的动力是什么? 13."What qualities do you feel are important to be successful in _____ (i.e. customer service)?" 哪些品质在你看来对成功是最重要的? 14."What previous experience has helped you develop these qualities?" 哪些之前的精力帮助你获得了这些品质? 15."Can you give me an example of teamwork and leadership?" 你能向我列举一个团队活动和领导力的例子吗? 16."What was your greatest challenge and how did you overcome it?" 你经历过最大的挑战是什么?你如何跨越它的? 17."Why should I hire you over the other candidates I am interviewing?" 我为什么要从这么多应聘者中选择你呢? 18."Do you have any questions?" 你有一些什么问题吗? 19."What are your compensation expectations?" 你去年的收入是多少?你对于报酬有什么样的期望? General Questions: 20."What was your greatest accomplishment in past time?" 在过去的日子里,你觉得自己最大的成就是什么? 21."Have you ever been asked to do something unethical? If yes, how did you handle it?"曾经有人要求你去做一些不道德的事情吗?如果有,你是怎么处理的呢? 22."What do you do if you totally disagree with a request made by your manager?"如果你完全不同意你上司的某个要求,你怎么处理? Leadership Questions: 23."When in a group setting, what is your typical role?" 你在团队中通常的作用是什么? 24."How do you motivate a team to succeed?" 你怎么激励团队达到成功?

英语教师面试问题 合集

1、你打算怎么样给小朋友上课? How are you going to give lessons to little kids? A: a good lesson is based on the teacher’s fully prepared. B: I think I am going to use all kinds of materials that are available like CD player, pictures, word cards, TV, magazines, games ects in my lessons. C: I am going to use different teaching meathods to help children with different learning styles. 2、你觉得教小学生跟教中学生有什么不同? What is the difference between teaching elementary school children and the junior high school children? A: when teaching little kids a teacher has to be more patient. B: He/she has to use lots of songs, games, body language to help student learn English.The forms of each lesson should be different. C: Teaching junior high school kids is a little bit different. I can introduce some grammer. I can give them more written work and I can have more discussions with the children. 3、如何让小学生对英文感兴趣? How are you going to keep the students interested in learning English? /如何将你的课上得有趣?How are you going to keep your lessons interesting?

史上最全的面试英语问题汇总

史上最全的面试英语问题汇总你是不是也遇到过这样的场面:面试过程中,面试官的问题各种刁钻和难以回答,你慌乱应付过去却与工作失之交臂。以下这个汇总文章贴,总结了典型的英语面试问题,让我们以后面试有备无患啦。 1. Tell me about yourself? 1.向我介绍一下你自己。 2. What are your greatest strengths? 2.你最大的优点是什么? 3. What are your greatest weakness? 3.你最大的缺点是什么? 4. Why did you quit your last job? 4.你为什么从上一份工作离职? 5. Why do you want to work here? 5.你为什么想在这儿工作? 6. What do co-workers say about you? 6.你的同事如何评价你? 7. Are you applying for other jobs? 7.你有应聘其他的工作吗? 8. What do you know about us? 8.你对我们公司有什么了解? 9. What kind of salary are you looking for? 9.你的期望薪资是多少? 10. How long would you expect to work for us if hired? 10.如果被录用了,你预计会在我们公司工作多久? 11. Do you know anyone who works for us? 11.你认识在我们公司工作的员工吗? 12. Why should we hire you? 12.我们为什么要雇用你? 13. What Is Your Dream Job? 13.你理想的工作是什么?

世界500强常见英语面试题大全

世界500强常见英语面试题大全 500强企业时,常常用英语来进行问答,当面试官用英语向你提出问题时,你要是能讲一口流利的英语,再配合使用眼神、手势等形体语言,那无疑是为您的面试锦上添花,所有的面试官都会对你刮目相看。宏威管理咨询有限公司的美籍华人、核心咨询师Dejun Lee 告诉大家:在国内,英语的口语有两大类:一类是中国式的英语,这种口语是将要回答的问题先用汉语组织好文章或句子,然后再翻译成英语,这当然是口语不过关的表现,也是不过关的症结所在;另一类就是完全按外国人的方式和习惯,直接用英语来组织语言,这当然是英语口语已经很顺畅或完全过关了。二者之间当然还跨越着一段距离,还需今后继续努力,目前,你达到哪类就按哪类准备,先解燃眉之急吧,反正那也不是一日之功。 500强企业面试时,常用英语提出问题。宏威职业顾问经过归纳总结,将500强面试的问题基本上是按前面我们所说的能力素质

模型,分成3类16条,每一条里有几个不同的问题,大体如下: 分析判断能力: 1.分析能力: 1) 请给出一个事例,表明你在面对情况非常复杂的局面的时候是如何分析和评估的。 Tell me about a complex situation which you have had to analyze and assess. 2) 当你面对一个有矛盾冲突的问题时,你会怎么做? When you have been faced with conflicting information about a problem, what have you done?

3) 请列举一个你在工作中面对一种微妙而又困难的局面时,能够成功地保持客观的分析能力的例子。 Tell me about an occasion where you successfully maintained your objectivity in addressing a sensitive and difficult situation at work. 2.市场敏感度: 1) 请给出一个你满足消费者或客户需求变化的例子。 Tell me about a time when you have addressed a change in consumers or customers needs. 2) 你最近的一次创新活动是什么?

常见的英语面试问题

常见的英语面试问题 xx常见的英语面试问题大全 中应试者是否能够将自己的思想、观点、意见或建议顺畅地用语言表达出来。考察的具体内容包括:表达的逻辑性、准确性、感染力、音质、音色、音量、音调等。下面盘点了xx常见的英语,希望对求职的您有帮助: Why do you feel you are qualified for this job? This question is a good opportunity to brag a little bit. You should talk about some extra skills you have that maybe wasn’t included in your resume, or talk about your greatest strength in more detail. 你为什么觉得自己胜任这份工作?这时候你要充分发挥你的“自夸”本领。你可以讲述一些资料里面没有包括的技能;或者是再详细强调一下你的特长。 What kind of salary did you have in mind?

Salary is how much money you earn, usually per year. When asked this, it’s best to answer with a salary range or approximation and not an exact figure. This shows that you are familiar with the industry if you know what the approximate salary should be. 你期望的薪水是多少?“salary”就是你赚多少钱,通常是年收入。回答这个问题时,最好说出一个大致范围,而不是一个确切的数字。如果你能说出这个工资范围,那就说明你对此行业非常了解。 If hired, when could you start work? When answering this it’s best not to say you can start right away. This might make you seem very desperate for a job. A safe answer would be I can start at the beginning of next month. 如果雇佣的话,你什么时候开始工作?回答这个问题时。一定要注意!不要说我马上可以工作。那会让对方认为你非常迫切地需要这份工作。一个非常保险的回答可以是“I can start at the beginning of next month.”(我下月初可以开始上班。)

自己整理英语教师考试面试问题(本人已通过)(1)资料

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