A.80%~90% B.90%~94% C.93%~97% D.A或B
A.產(chǎn)水量與給水量之比 B.與A相反 C.排鹽(水)量與給水量之比 D.與C相反
A.蒸發(fā)器加熱介質(zhì) B.蒸發(fā)器被加熱介質(zhì) C.冷凝器冷卻介質(zhì) D.冷凝器被冷卻介質(zhì)