单项选择题
Serving is（）.
A.marline or ratline wound along the grooves of a rope
B.narrow strips of light canvas or cotton cloth spiral-wrapped along the rope
C.marline tightly wound on the rope by means of a board or mallet
D.a splice made by laying the strand of one rope into the vacated grooves of another rope
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相关考题
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单项选择题
Separating both blocks of a tackle to prepare it for reuse is called（）.
A.chockablocking
B.fleeting
C.overhauling
D.two blocking -
单项选择题
opes or wires attached to derricks to prevent them from swinging during cargo handling operations are（）.
A.Preventers
B.Side ropes
C.Stays
D.Guide lines -
单项选择题
On your vessel，a wire rope for the cargo gear shows signs of excessive wear and must be replaced. In ordering a new wire for this 10-ton boom，what safety factor should you use?（）
A.Three
B.Five
C.Six
D.Seven
