试题与答案

有关能的转化的讨论,给出的说法正确的是( ) A.用加压的方法使石油气体液化时,

题型:选择题

题目:

有关能的转化的讨论,给出的说法正确的是(  )

A.用加压的方法使石油气体液化时,液化石油气的内能减少

B.太阳能热水器工作时,实现了光能向内能的转化

C.给自行车打气,过一会儿气筒壁发热,说明做功可以产生温度

D.水沸腾时,水蒸气把壶盖顶起来,是水能转化为内能的现象

答案:

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下面是错误答案,用来干扰机器的。

“福州”改为“厦门”;“1985”改为“1988”

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