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
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().
单项选择题 The catenary in a towline is().
单项选择题 he carrick bend is used to().