单项选择题

The disadvantage of using three strand nylon line for towing is its（）.

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

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单项选择题

The correct way to make an eye in a wire rope with clips is to place the clips with the（）.

A.first and third U-bolts on the bitter end and the second U-bolt on the standing part
B.first and third U-bolts on the standing part and the second U-bolt on the bitter end
C.U-bolts of all clips on the bitter end
D.U-bolts of all clips on the standing part

单项选择题

The catenary in a towline is（）.

A.a short bridle
B.the downward curvature of the hawser
C.another name for a pelican hook
D.used to hold it amidships

单项选择题

he carrick bend is used to（）.

A.add strength to a weak spot in a line
B.join two hawsers
C.be a stopper to transfer a line under strain
D.join lines of different sizes