A.10-11% B.8%-9% C.19-20% D.22-23%
A.32-33% B.35%-36% C.19-20% D.22-23%
A.各放空集管內(nèi)冷凝下的THF B.反洗管線的爆破片破裂 C.過(guò)濾管線的爆破片破裂