题目内容
气囊式蓄能器所充气体采用空气,不采用氮气、氧气、氢气,比较危险。
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溢流阀的远控口通油箱时,液压系统卸荷。
液(外)控顺序阀阀芯的启闭不是利用进油口压力来控制的。
减压阀调压弹簧预调压力为5MP,而减压阀的一次压力为4 MP,试问经A减压阀后的二次压力是4 MP?因为减压阀全开。
1. The general manager decided______ his visit to Britain because of the sudden accident. (2015-06)a. delay b. delaying c. to delay d. to be delayed2.There may be a need for retraining if you expect employees ____________new technology.a. using b. usec. to use d. used3. The company is offering a five percent discount to customers as a way _______its online sales.a. promotingb. promoted c. to promoted. promotes4. Before the age of Internet, we used to _________our holidays through travel agents.a. bookb. booking c. having bookedd. have booked5.We all recognize the necessity for people ________rights of others. (2014-06)a. respectb.respecting c. to respectd. respected6. Itis common practice _________ a battery when it still has some life in it. (2014-12)a. to chargeb. chargec. chargedd. having charged7. I became a teacher because I preferred books and people_________ politics.a. than b. toc. rather d. against8.Young volunteers enjoy(help)______the senior citizens in their everyday life.(2013-6)9. We’ve agreed (transfer)___to transfer___part of our business to a new owner. (2013-6)10.Harvey finished ______ his research paper, but he neededto check it before submitting it to the professor. (2016-06)a.to typeb. typedc. typing d.type11. 62% of the people surveyed said they always avoided_____ their smart-phones during meals. (2017-06)a. useb. usingc. to used. used12. If people don’t like ________ by titles, you can ask them how they prefer to be addressed. (2018-12)a. are calledb. being calledc.be calledd. called13. When it comes to shopping habits, he suggested (buy) _______ products that are made from recycled materials.(2017-12)14. These questions enable the interviewer (know) ____to know_____ how you previously reacted or behaved in certain types of situations. (2017-06)15. A good plan provides your employees with a clear direction on how ______ their skills and advance their careers. (2018-12)a. increaseb. to increasec. increasedd. increasing16. Do you think the new engineer can help me_______ my operating skills? (2016-12)a. improvesb. improvedc. improved. has improved17. The flight scheduled _______ at 9 a.m. was delayedfour hours due to the bad weather. (2016-06)a. to take off b. take offc. taking offd. to be taken off
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