选择题:Weighing seven hundred pounds, ______.A. she could

题目内容:
Weighing seven hundred pounds, ______.
A. she could not move the piano B. the piano should not be moved
C. the piano was too heavy for her to move D. the piano was unable to move
参考答案:

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人体产生尿液的器官是( )(本题2.0分)A. 尿道B. 膀胱C. 输尿管D. 肾脏

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You ______ all those calculations. We have a compu

You ______ all those calculations. We have a computer to do that sort of thing.A

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17. 能将液压能转换成机械能的液压元件是( )。(本题3.0分)A. 液压泵B. 液压缸C. 单向

17. 能将液压能转换成机械能的液压元件是( )。(本题3.0分)A. 液压泵B. 液压缸C. 单向阀D. 都不行

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23.下述材料中哪一个归属优质碳钢( )。(本题2.0分)A. 1Cr13B. 20.0C. 1Cr25Si2D. 16MnDR

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