单项选择题
A.tugs B.fenders C.ropes D.barges
（）（调整）ropes when necessary.A.TryB.AdjustC.NoticeD.Opera...
单项选择题（）（调整）ropes when necessary.
A.Try B.Adjust C.Notice D.Operate
Each line has a large（）（琵琶头）at the end.A.holeB.eye spl...
单项选择题Each line has a large（）（琵琶头）at the end.
A.hole B.eye splice C.ring head D.chain
Put forward spring on the （）（系缆桩）.A.wharfB.bollardC.nut...
单项选择题Put forward spring on the （）（系缆桩）.
A.wharf B.bollard C.nut D.port
