A.聚氨酯風(fēng)管B.酚醛風(fēng)管C.玻鎂風(fēng)管D.混凝土風(fēng)道E.鍍鋅鋼板風(fēng)管
A.經(jīng)濟(jì)器中間壓力B.排氣壓力C.吸氣壓力D.吸排氣壓差E.供回水壓差
A.先開(kāi)啟冷卻水泵后開(kāi)啟冷凍水泵B.先開(kāi)啟冷凍水泵后開(kāi)啟冷卻水泵C.先開(kāi)啟冷卻塔風(fēng)機(jī)后開(kāi)啟冷卻水泵D.先開(kāi)啟水泵后開(kāi)啟冷機(jī)E.先開(kāi)啟冷機(jī)后開(kāi)啟水泵