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29. A heat engine operates between 200 K and 100 K. In each cycle it takes 100 J from the hot reservoir, loses 25 J to the cold reservoir and does 75 J of work. This heat engine violates:
(A) both the first and second laws of thermodynamics
(B) the first law but not the second law of thermodynamics
(C) the second law but not the first law of thermodynamics
(D) neither the first law no the second law of thermodynamics



29. A heat engine operates between 200 K..-阿摩線上測驗