习题 选择题(单选题) 1-1按连续介质的概念,流体质点是指: (a)流体的分子; (b)流体内的固体颗粒; (c)几何的点; (d)几何尺寸同流动空间相比是极小量,又含有大量分子的微元体

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Unit Five Text B I. Pre-Reading Task 1.\Intel is the name of a(n A U.S. company B. IBM computer C government department D branch of the Internet 2. China is a country scientists and engineers in terms of computing technology

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art I Listening Comprehension Section C Spot Dictation Directions: In this section, you will hear a passage three times. Listen carefully during the first reading. Then listen to the passage again. When it is being read the second time, you

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