A.循泵故障使循環(huán)水中斷 B.循泵故障使循環(huán)水量不足 C.冷卻水進口溫度升高 D.凝汽器冷卻水管表面臟污
A.CrMo910 B.15CrMo C.12CrMoV D.15Mo
A.4% B.5% C.6% D.7%