A.主機→冷卻水泵→冷凍水泵→冷卻塔風(fēng)扇B.冷卻塔風(fēng)扇→冷卻水泵→冷凍水泵→主機C.冷卻水泵→冷凍水泵→主機→冷卻塔風(fēng)扇D.冷卻水泵→冷凍水泵→冷卻塔風(fēng)扇→主機
A.2%B.4%C.6%D.8%