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【单选题】
如图所示,系统从状态A沿ABC变化到状态C的过程中,外界有326 J的热量传递给系统,同时系统对外作功126 J。当系统从状态C沿另一曲线CA返回到状态A时,外界对系统作功为52 J,则此过程中系统传递的热量为A.
吸热250 J
B.
放热252 J
C.
吸热148 J
D.
放热148 J
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