单项选择题

A tool consisting of a handle and releasable chain used for turning pipe or fittings of a diameter larger than that which a pipe wrench would fit is called（）.

A.breakout wrench
B.makeup tongs
C.chain tongs
D.pipe spinner

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单项选择题

A sufficient amount of chain must be veered when anchoring a vessel to ensure（）.

A.the vessel has enough room to swing while at anchor
B.the anchor flukes bite into the ocean bottom
C.there is sufficient weight from the anchor and chain to prevent dragging
D.there is more chain out than there is in the chain locker

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A spring line is a（）.

A.mooring line made of spring lay wire rope
B.mooring line running diagonally to the keel
C.mooring line parallel to the keel
D.wire rope used for securing an anchor buoy

单项选择题

A six-strand composite rope made up of alternate fiber and wire strands around a fiber core is called（）.

A.Spring lay
B.Lang lay
C.Cable lay
D.Alternate lay