单项选择题

What equipment is customarily used when seamen are working on a stage rigged over the side of a vessel（）.

A.Jacob's ladder
B.Manropes
C.Heaving lines
D.All of the above

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What does the term end-for-end refer to in regard to a wire towing hawser（）.

A.Cutting off the bitter and towing ends of the wire rope
B.Splicing two wire ropes together
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What best describes an anchor buoy（）.

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B.Flash-butt welded chain and Di-Lok chain
C.Flash-butt welded chain and Oil Rig chain
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