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为什么在离心泵进口管下要安装底阀?

发布日期:2020-12-11

为什么在离心泵进口管下要安装底阀?

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大学试题

工学

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Passage 1  “Cool” is a word with many meanings. Its traditional meaning is used to (1)______ a temperature that is fairly cool. As the world has (2)______, the word has expanded to (3)______ many different meanings.  “Cool” can be used to express feelings of (4)______in almost anything.  When you see a brand-name car in the street, maybe you can’t help (5)______, “It’s cool.” You might think, “He’s so cool,” when you see your (6)______ footballer.  We all enlarge the meaning of “cool”. You can use it (7)______ many words such as “new” or “amazing”. Here’s an interesting story (8)______ illustrate the usage of the word: A teacher asked her students to (9)______ the waterfall they had visited. On one student’s paper was just the one (10)______, “It’s so cool.” (11)______ he thought it was (12)______ to describe (13)______ he saw and felt.  (14)______ the story also proves the shortage of words and expressions. (15)______“cool”, some people have no words to express the same meaning. So it is (16)______ to improve our word strength to maintain some (17)______.  As a popular word, “cool” stands for a kind of special (18)______ that people can accept easily. Except “cool”, can you think of many words that (19)______ your life as colorful? I can. And I think they are also very (20)______.1. A. find        B. take          C. show         D. make sure2. A. changed       B. been developed     C. been cleaned     D. informed3. A. turn out      B. take on         C. take in        D. come into4. A. satisfaction    B. interest        C. sense         D. interesting5. A. to say       B. telling         C. shout         D. saying6. A. famous       B. out of date       C. favorite       D. modem7. A. instead of     B. in place of       C. to take place of   D. exchange8. A. is used to     B. showing         C. used to        D. explaining9. A. write for      B. copy down        C. describe       D. say something10. A. phrase       B. word          C. story         D. sentence11. A. However      B. Maybe          C. As far as       D. Perhaps12. A. the just thing   B. the very mean      C. some methods     D. the best way13. A. the means     B. what          C. how          D. wherever14. A. And        B. If           C. So          D. But15. A. Without      B. Using          C. Not being used    D. With16. A. important     B. necessary        C. impossible      D. natural17. A. true        B. belief         C. richness       D. interest18. A. habit       B. culture         C. language       D. enjoyment19. A. put        B. change         C. better        D. make20. A. cool        B. easy          C. difficult       D. important

辛亥革命遗址()

从所给的四个选项中,选择最适合的一个填入问号处,使之呈现一定的规律性:

担任单位会计机构负责人(会计主管人员)的,除取得会计从业资格证书外,还应当具备()以上专业技术职务资格或者从事会计工作三年以上经历。

按照基金的投资风格划分,下列不属于的是()。

下列哪些是正确的选择区域的方法?()

客户至网点办理附言信息查询时,网点柜员可通过()为客户查询,并打印留言内容。礼仪汇款留言内容需打印在总行规定样式的卡片上。

下列属于保险计划常用指标的有().

简述起草集体合同的程序。

男性,50岁。肝硬化腹水患者,因眩晕、恶心伴耳鸣就诊。体检:血压15/9kPa,巩膜黄染,眼球轻度水平震颤,血氨55μmol/L,静脉注射山莨菪碱(654-2)后症状减轻,应首先考虑()。

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