单项选择题
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
（）（解掉）the spring ！A. Make fastB. Let goC. Hold onD. Pay...
单项选择题（）（解掉）the spring ！
A. Make fast B. Let go C. Hold on D. Pay out
