单项选择题
The best method of protecting that portion of a fiber anchor line nearest the anchor from chafing on the bottom is by（）.
A.using a small scope ratio
B.replacing that portion with a short length of chain
C.using a hockle to keep that portion of the anchor line off the bottom
D.using a synthetic line
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The best method for tying two lines of the same size together is by using a（）.
A.becket bend
B.two bowlines
C.single carrick bend
D.square knot -
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Temporary seizings on wire rope are made with（）.
A.marline
B.sail twine
C.tape
D.wire -
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Sufficient cargo tanks shall be（）prior to each ballast voyage in order that，taking into account the tanker’s trading pattern and expected weather conditions，ballast water is put only into cargo tanks which have been crude oil washed.
A.inerted
B.crude oil washed
C.gas freed
D.batterned down
