单项选择题

The knot used to join two lines of different diameter is a（）.

A.square knot
B.carrick bend
C.becket bend
D.sheepshank

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单项选择题

A.monkey's fist
B.ball or baseball knot
C.heaving knot
D.three strand Turk's head

单项选择题

A.at the base of the boom
B.at the cargo hook
C.near the midships guy
D.near the spider band

单项选择题

A.inherent weakness
B.tendency to rot if left damp
C.danger to crew if it parts
D.strength and shock absorbing abilities