给旱区送水的消防车停于水平面，在缓缓放水的过程中，若车胎不漏

更新 2022-09-03
科目物理
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给旱区送水的消防车停于水平面，在缓缓放水的过程中，若车胎不漏气，胎内气体温度不变，不计分子势能，则胎内气体（）

A．

从外界吸热

B．

对外界做负功

C．

分子平均动能减少

D．

内能增加

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