《专业英语》期末考试卷答案.docx

XX职校 2018 年春季《专业英语》 期末考试卷（参考答案） 考试时间 120 分钟 学号 姓名 班级 年级 一、单选题（每小题 2 分，共 30 分） 1. If all points in a linkage move in parallel planes the system undergoes plan ar motion and the linkage may be describ ed as a . A. planar motion B. planar linkage C. joints D. slide 2. Though frame material and desig n should handle damping, are sometimes built into frame sec tions to handle specific problems. A .beams B. holes C. dam pers D. screw 3. The maximum allowable deflecti on of a shaft determined by critic al speed, gear, or bearing requirements. A. often B. must C. was D. is u sually 4. We will have to to better a nd better solutions as we generate more i nformation. A. repeat many times B. iterating C. iterate D. try ways 5. If a product configuration is specified and then examined to dete rmine whether the performance requirem ents are met. A. finally B. tentatively C. tempo rary D. have been 6. Manufacturing can be defined as the of raw materials into useful pr oducts 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 milli ng machine is because of its flexib ility. A. used most commonly B. most popular C. the most commonly used D. most powerful 8. As a result, the system will vibrat e at the frequency of the force reg ardless of the initial conditions or natural frequency of the system. A. action B. excitation C. out D. act 9. Before two components are asse mbled together, the relationship between the dimensions of the mating surfaces A. must be giving out B. should p rinted clearly C. must be specified D. should be clearly noted 10. The main practical advantage of lower pairs is their better ability to trap lu bricant between their surfaces. A. enveloping B. mating C. outer D. outside 11. The word itself usually r efers