单项选择题

A.BeforeB.DuringC.AfterD.Within（）operation, any obstacl……

（）operation, any obstacles in the way of hatches must be removed and cleaned.

A.Before
B.During
C.After
D.Within

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热门试题

单项选择题Each （）consists of two or more panels.

A.cover
B.hatch
C.derrick
D.winch

单项选择题Keep a close watch on（） cargo.

A.value
B.valuation
C.valuable
D.All above

单项选择题（）on cargo lights.

A.Close
B.Switch
C.Open
D.All above.

单项选择题These goods shall be handled with （）.

A.caution
B.poisonous
C.flammable
D.dangerous

单项选择题Before （）the harbour, all derricks must be secured properly.

A.leave
B.leaved
C.to leave
D.leaving