A.b1a过程放热,做负功;b2a过程放热,做负功 B.b1a过程吸热,做负功;b2a过程放热,做负功 C.b1a过程吸热,做正功;b2a过程吸热,做负功 D.b1a过程放热,做正功;b2a过程吸热,做正功

A.b1a过程放热,做负功;b2a过程放热,做负功 B.b1a过程吸热,做负功;b2a过程放热,做负功 C.b1a过程吸热,做正功;b2a过程吸热,做负功 D.b1a过程放热,做正功;b2a过程吸热,做正功

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A.3.03A,45.45A B.45.45A,3.03A C.4.29A,64.28A D.64.28A,4.29A

A.3.03A,45.45A B.45.45A,3.03A C.4.29A,64.28A D.64.28A,4.29A

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