單項選擇題

By regulation, cargo tanks must be inert before and during what operation?（）.

A.Stripping
B.Loading
C.Cleaning
D.Crude oil washing

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單項選擇題

By the stowage factor,when given a certain volume of space, we know（）.

A.the space of the ship
B.the space of one ship
C.what kind of cargo can be stowed
D.how much cargo can be stowed

單項選擇題

Captain said that very clearly so that nobody was in any（）about what was meant?

A.doubt
B.question
C.wonder
D.consideration

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