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