A.It's just as important as other jobs. B.It's no less important than other jobs. C.It's even more important than other jobs. D.It's not important at all.
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【简答题】一定量的单原子分子理想气体,从初态 A 出发,沿图示直线过程变到另一状态 B,又经过等容、等压两过程回到状态 A。则整个循环过程中系统从外界吸收的总热量 Q = J。