机电专业英语复习题及答案(可编辑修改word版)

机电专业英语期末复习试题

一．选择题

1.If all points in a linkage move in parallel planes the system undergoes plan ar motion and the linkage may be described as a .

A.planar motion

B. planar linkage

C. joints

D. slide

2.Though frame material and design should handle damping,

are sometimes built into frame sections to handle specific problems.

A .beams B. holes C. dampers D. screw

3.The maximum allowable deflection of a shaft determined by critical s peed, gear, or bearing requirements.

A. often

B. must

C. was

D. is usually

4.We will have to to better and better solutions as we generate more in formation.

A. repeat many times

B. iterating

C. iterate

D. try ways

5.If a product configuration is specified and then examined to determ ine whether the performance requirements are met.

A. finally

B. tentatively

C. temporary

D. have been

6.Manufacturing can be defined as the of raw materials into useful prod ucts through the use of the easiest and lest-expensive methods.

A. transformation

B. processing

C. process

D. transforming

7.The planer and knee types of milling machine is because of its flexibi lity.

ed most commonly

B. most popular

C. the most commonly used

D. mo st powerful

8.As a result, the system will vibrate at the frequency of the force re gardless of the initial conditions or natural frequency of the system.

A. action

B. excitation

C. out

D. act

9.Before two components are assembled together, the relationship between the d imensions of the mating surfaces .

A.must be giving out

B. should printed clearly

C. must be specified D . should be clearly noted

10.The main practical advantage of lower pairs is their better ability to trap lubricant between their surfaces.

A. enveloping

B. mating

C. outer

D. outside

11.The word itself usually refers to the deterioration of metals and cer amics, while similar phenomena in plastics generally called .

A. recrystallization…. corrosion

B. recrystallization…degradation

C. degradation…corrosion

D. corrosion… degradation

12.Most frames cast iron, weld steel, composition, or concrete.

A. are made from

B. are made up of

C. was produced by

D. was consist of

13.Rotating shafts particularly those that run at high speeds, must be designe

d to avoid operation at speeds.

A . low

B .overload C. critical D. hollow