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單項(xiàng)選擇題

A rope made of a combination of wire and fiber is known as（）.

A.independent
B.lang lay
C.preformed
D.spring lay

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單項(xiàng)選擇題

A permanent chain chasing system is used to（）.

A.clean anchor chain as it's hauled in
B.recover anchors which have lost their buoys
C.run and retrieve anchors
D.prepare anchor chain for inspection

單項(xiàng)選擇題

A pelican hook（）.

A.can be released while under strain
B.is used for boat falls
C.is used for extra heavy loads
D.is used for light loads only

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