單項(xiàng)選擇題The rope which is the lightest is（）.
A.manila
B.nylon
C.polypropylene
D.dacron
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1.單項(xiàng)選擇題The rope which is rove from the truck to be used with a bos’n chair is called a（）.
A.gantline
B.life line
C.strop
D.whip
2.單項(xiàng)選擇題The rolling hitch could be used to（）.
A.join two lines of different sizes
B.join two lines of equal sizes
C.add strength to a weak spot in a line
D.act as a stopper to transfer a line under strain
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At the instant when a string of casing being run from a ship is landed in the well head,（）.
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Extended cyclical variations in tensions will cause an anchor chain to break due to（）.
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Herringbone is a term associated with（）.
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Cribbing is（）.
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Compared to manila line，size for size，nylon line（）.
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