A. 热量可以从高温物体传到低温物体，但不能从低温物体传到高温物体
B. 功可以全部变为热，但热不能全部变为功
C. 气体能够自由膨胀，但不能自由压缩
D. 有规则运动的能量能够变为无规则运动的能量，但无规则运动的能量不能变为有规则运动的能量
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