题目内容
液(外)控顺序阀阀芯的启闭不是利用进油口压力来控制的。
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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
《公路水运试验检测数据报告编制导则》主要引用文件是( )
检测类报告以获得( )为目的,针对材料、构件、工程制品及实体的一个或多个技术指标进行检测而出具的数据结果和检测结论。
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