A.蒸發(fā)器和冷凝器均向介質(zhì)放熱B.蒸發(fā)器從介質(zhì)中吸熱,冷凝器向介質(zhì)放熱C.蒸發(fā)器和冷凝器均向介質(zhì)吸熱D.蒸發(fā)器是向介質(zhì)供熱部件,冷凝器是向介質(zhì)吸熱的部件