单项选择题
A.货舱惰化 B.货舱驱气 C.货舱预冷 D.货舱通风
A.50%~60%;40% B.70%~80%;60% C.98%;80% D.98%;90%
A.80% B.90% C.95% D.98%
A.0.107 B.0.13~0.17 C.0.128 D.1.18
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