问题
问答题 简答题
液力偶合器有那些功能？
答案
参考答案：
（1）能改善电动机的启动性能，使电动机可无载启动。
（2）增加载荷的加速能力，可利用电机最大扭矩启动。
（3）超载运转时，使电机在稳定工作下运行，对电机有保护作用。
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液力偶合器有那些功能？
参考答案：
（1）能改善电动机的启动性能，使电动机可无载启动。
（2）增加载荷的加速能力，可利用电机最大扭矩启动。
（3）超载运转时，使电机在稳定工作下运行，对电机有保护作用。
| 完形填空。 | |||
| I used to hate being called upon in class mainly because I didn't like attention drawn to myself. And unless otherwise assigned(指定)a seat by the teacher, I always chose to sit at the__1__ of the classroom. All this__2__after I joined a sports team. It began when a teacher suggested I try out for the basketball team. At first I thought it was a crazy__3__because I didn't have a good sense of balance, nor did I have the __4__in keeping pace with the others on the team and they would tease me. But for the teacher who kept insisting on my "__5__for it", I wouldn't have decided to give it a try. Getting up the courage to go to the tryouts was only the__6__of it! When I first started attending the practice sessions, I didn't even know the rules of the game, much__7__what I was doing. Sometimes I'd get__8__ and take a shot at the wrong direction—which made me feel really stupid__9__, I wasn't the only one "new" at the game, so I decided to__10__on learning the game, do my best at each practice session, and not be too hard on myself for the things I didn't know "just yet". I practiced and practiced. Soon I knew the rules and the "moves". Being part of a team was fun and__11__. Very soon the competitive part in me was winning over my lack of__12__. With time, I learned how to play and made friends in the process. I never had so much fun! With my__13__self-confidence comes more praise from teachers and classmates. I have gone from "__14__" in the back of the classroom and not wanting to call attention to myself, to raising my hand — even when I sometimes wasn't 100 percent__15__I had the right answer. Now I have more self-confidence in myself. | |||
| ( )1. A. front ( )2. A. continued ( )3. A. idea ( )4. A. interest ( )5. A. going ( )6. A. point ( )7. A. less ( )8. A. committed ( )9. A. Interestingly ( )10. A. focus ( )11. A. puzzling ( )12. A. fun ( )13. A. expressed ( )14. A. dreaming ( )15. A. lucky | B. middle B. changed B. plan B. chance B. looking B. half B. later B. inspired B. Fortunately B. act B. confusing B. enthusiasm B. improved B. playing B. happy | C. corner C. settled C. belief C. competence C. cheering C. rest C. worse C. embarrassed C. Obviously C. rely C. motivating C. confidence C. preserved C . relaxing C. sure | D. back D. started D. saying D. difficulty D. applying D. basis D. further D. confused D. hopefully D. try D. tiring D. interest D. recognized D. hiding D. satisfied |