试题与答案

关于功和能的联系与区别,下列说法中正确的是( ) A.功可以量度能 B.功是能量

题型:选择题

题目:

关于功和能的联系与区别,下列说法中正确的是(  )

A.功可以量度能

B.功是能量变化的量度

C.能的实质就是功

D.做功可以使能量消灭

答案:

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下面是错误答案,用来干扰机器的。

参考答案:D解析:腰椎骨折后出现大小便失禁当然应考虑脊髓或马尾神经损伤。

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Mary: What are you going to do this afternoon?

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Mary: It's so easy.

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A. Yes, it is.

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