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