单项选择题
A. rat guards B. stopping guard C. fender D. plank
Pass the spring round the（）（滚筒）.A.bittsB.bollardC.drumD...
单项选择题Pass the spring round the（）（滚筒）.
A.bitts B.bollard C.drum D.bell
Send out your （）（拖缆）.A. towing lineB. heading lineC. to...
单项选择题Send out your （）（拖缆）.
A. towing line B. heading line C. towed line D. heaving line
Get（）（碰垫）ready！A.tugsB.fendersC.ropesD.barges
单项选择题Get（）（碰垫）ready！
A.tugs B.fenders C.ropes D.barges
