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單項(xiàng)選擇題

Before the operation of the derrick, check all （）(索具)closely and everything must be in good condition.

A.blocks
B.goosenecks
C.tackle
D.guys

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單項(xiàng)選擇題

The（）(地腳貨) must be bagged.

A. bagged cargo
B. delicate cargo
C. sweepings
D. inboard cargo

單項(xiàng)選擇題

As a sailor on duty you must know how to （）(調(diào)整)derricks.

A. taken in
B. slack off
C. adjust
D. send out