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功和热传递在改变物体的内能上是等效的,在下图中属于热传递改变物体内能的是( ) ...
功和热传递在改变物体的内能上是等效的,在下图中属于热传递改变物体内能的是( )
A.
![manfen5.com 满分网](http://img.manfen5.com/res/CZWL/web/STSource/20131104181509104013346/SYS201311041815091040133011_ST/images0.png)
两手摩擦发热
B.
![manfen5.com 满分网](http://img.manfen5.com/res/CZWL/web/STSource/20131104181509104013346/SYS201311041815091040133011_ST/images1.png)
烧水水变热
C.
![manfen5.com 满分网](http://img.manfen5.com/res/CZWL/web/STSource/20131104181509104013346/SYS201311041815091040133011_ST/images2.png)
锯木材锯子发热
D.
![manfen5.com 满分网](http://img.manfen5.com/res/CZWL/web/STSource/20131104181509104013346/SYS201311041815091040133011_ST/images3.png)
钻木取火
考点分析:
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