机械专业英语试题及答案.docx

1、机械专业英语试题及答案机械专业英语试题及答案专 业班 级学 号姓 名教研室主任（签字）学院院长（系主任）（签字）XX交通大学试卷2009 2010 学年 第2学期课程 机械工程专业英语 课程性质（必修限选任选） 考试方式（闭卷开卷）一、选择题（在每题四个备选答案中选出一个正确答案，本大题共15小题，每小题1分，总计15分）1. If all points in a linkage move in parallel planes the system undergoes planar motion and the linkage may be described as a .A. planar

2、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. screw3. The maximum allowable deflection of a shaft _ determined by critical speed, gear, or bear

3、ing requirements. A. often B. must C. was D. is usually 4. We will have to _ to better and better solutions as we generate more information. A. repeat many times B. iterating C. iterate D. try ways 5. If a product configuration is _ specified and then examined to determine whether the performance re

4、quirements are met.A. finally B. tentatively C. temporary D. have been6. Manufacturing can be defined as the _ of raw materials into useful products through the use of the easiest and lest-expensive methods.A. transformation B. processing C. process D. transforming7. The planer and knee types of mil

5、ling machine is _ because of its flexibility. A. used most commonly B. most popular C. the most commonly used D. most powerful8. As a result, the system will vibrate at the frequency of the _ force regardless of the initial conditions or natural frequency of the system. A. action B. excitation C. ou

6、t D. act9. Before two components are assembled together, the relationship between the dimensions of the mating surfaces_. A. must be giving out B. should printed clearlyC. must be specified D. should be clearly noted 10. The main practical advantage of lower pairs is their better ability to trap lub

7、ricant between their _ surfaces. A. enveloping B. mating C. outer D. outside11. The word_ itself usually refers to the deterioration of metals and ceramics, while similar phenomena in plastics generally called _. A. recrystallization. corrosion B. recrystallizationdegradation 题 号一二三四五六七八总 分得 分C. deg

8、radationcorrosion D. corrosion degradation12. 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 of13. Rotating shafts particularly those that run at high speeds, must be designed to avoid operation at speeds.A . low B .

9、overload C. critical D. hollow14. Although cast iron is a fairly cheap material, each casting requires a .A. pattern B. model C. mold D. patent15. The term is used to describe joints with surface contact, as with a pin surrounded by a hole.A. high pair B. low pair C. surface pair D. rotary pair 二、完型

10、填空（在每个小题四个备选答案中选出一个正确答案，本大题共15小题，每小题1分，总计15分）The term shaft usually refers to a relatively long member of round cross section that rotates and transmits power. One or more members such as gears, sprockets, pulleys, and cams are usually (16) to the shaft by means of pins, keys, splines, snap rings, a

11、nd other devices. These latter members are among the “associated parts” considered in this text, as are couplings and universal joint, which serve to (17) the shaft to the source of power or load.A shaft can have a noround cross section, ant it need not necessarily rotate. It can be stationary and s

12、erve to (18) a rotating member, such as the short shafts that support the nondriving wheels of an automobile. The shafts supporting(19) gears can be either rotating or stationary depending on (20) the gear is attached to the shaft or supported by it through bearings.It is apparent that shafts can be

13、 subjected to various combinations of axial, bending, and(21) loads, and that these loads may be static or fluctuating. Typically, a rotating shaft transmitting power is (22) to a constant torque (producing a mean torsional stress) together with a completely reversed bending load (producing an alter

14、nating bending stress).In addition to satisfying (23) requirements, shafts must be designed so that deflections are within acceptable limits. Excessive (24) shafts deflection can hamper gear performance and cause (25) noise. The associated angular deflection can be very destructive to no-self- align

15、ing bearings(either plain or rolling). (26) deflection can affect the accuracy of a cam or gear driven mechanism. Furthermore, the greater the flexibility -either lateral or torsional-the lower the corresponding (27) speed. 考生注意： 考试时间 120 分钟 试卷总分 100 分 共 5 页 第 1 页专 业班 级学 号姓 名 Sometimes members like

16、gears and cams are made (28) with shaft, but more often such members (which also include pulleys, sprockets, etc)are made separately and then(29) shaft. The portion of the mounted member in contact with the shaft is the hub. Attachment of the hub to the shaft is made in variety of ways. A gear can b

17、e gripped (30) between a shoulder on the shaft and a spacer, with torque being transmitted through a key. The grooves in the shaft and hub into which the key fits are called keyways.16、 A) cement B) attached C) connected D) concrete 17、 A) endure B) transmit C) serve D) connect18、 A) support B) meet

18、 C) satisfy D) strong19、 A) aims B) idler C) terminal D) tomb 20、 A) due to B) weather C) whether D) for21、 A) elasticity B) torsional C) inertia D) acceleration 22、 A) subjected B)connect C) and D) From23、 A) deeply B) strength C) clearly understand D) long time24、 A) identify B) cross C) round D)

19、lateral 25、 A) lucrative B) objectionable C) attractable D) terrible 26、 A) Moment B)Torment C) Torsional D) Movement 27、 A) high B) critical C) first D) important 28、 A) work B) idealization C) integral D) simplification29、 A) mounted onto B) refers C) referring to D) indicates 30、 A) deformations

20、B) bending limits C) laternal D) axially 三、阅读理解（在每个小题四个备选答案中选出一个正确答案，填在题头的表中）（本大题共20小题，每小题2分，总计40分）Text 1 Engineering design is a systematic process by which solution to the needs of humankind are obtained .The process is applied to problems(needs) of varying complexity .For example, mechanical engi

21、neers will use the design process to find an effective, efficient method to convert reciprocating motion to circular motion for the drive train in an intnternal combustion engine; electrical engineers will use the process to design electrical generating systems using falling water as the power sourc

22、e; and materials engineers use the process to design ablative materials which enable astronauts to safely reenter the earths atmosphere.The vast majority of complex problems in todays high technology society depend for solution not on a single engineering discipline, but on teams of engineers, scien

23、tists, environmentalists, economists, sociologists, and legal personnel. Solutions are not only dependent regulations and political influence. As engineers we are empowered with the technical expertise to develop new and improved products and systems, but at the same time we must be increasingly awa

24、re of the impact of our actions on society and the environment in general and work conscientiously toward the best solution in view of all relevant factors. Design is the culmination of engineering educational process; it is the salient feature that distinguishes engineering design is found in the c

25、urriculum guidelines of the Accreditation Board for Engineering and Technology(ABET).ABET accredits curricula in engineering schools and derives its membership from the various engineering professional societies. Each accredited curriculum has a well-defined design component which falls within the A

26、BET statement on design read as follows.Engineering design is the process of devising a system, component, or process to meet desired needs. It is decision making process(often iterative),in which the basic sciences, mathematics, and engineering sciences are applied to convert resources optimally to

27、 meet a sated objectives and criteria, synthesis, analysis, construction ,testing, and evaluation. The engineering design component of a curriculum must include most of the following features : development of student creativity, use of open-ended problem statement and use of modern design theory and

28、 methodology, formulation of design problem statement and specification, consideration of alternative solutions, feasibility considerations, production process, concurrent engineering design, and detailed system descriptions. Further, it is essential to include a variety of realistic constraints suc

29、h as economic factors, safety, reliability, aesthetics, ethics, and social impact.31、whats the main meaning of message (1)?A) Engineering design is a systematic process B) materials engineers main workC) mechanical engineers has good idea D) electrical engineer main duty32、In the authors opinion, th

30、e design process is very complex and should taken into account many factors, from the message who should NOT join into the design team _. A) environmentalists,B) sociologistsC) engineersD) Government officials33、From the message, we can know the meaning of words “ABET ”(at line third paragraph) is _

31、. A) a set of accredits standard B) a kind of design methodC) a department of US government which responsible for engineering designD) A set of law34、It can be concluded from the passage that in the exercise and training of student, which character of the following is NOT included in the curriculum _. A) creativity B) new materialC) ethicsD) economic factors35、The title of the message is _. A) the roles of engineers in manufacturing B) the importance of mechanical design C) engineering design D) The process of machine design TEXT 2Working drawings ar