单项选择题
A. shift aft B. shift astern C. move aft D. move back
We have to（）(前移)one metre.A. shift aheadB .shift headC....
单项选择题We have to（）(前移)one metre.
A. shift ahead B .shift head C. move forward D. shift forward
（）（班轮）sail on regular routes.A. Light shipsB. Lift craf...
单项选择题（）（班轮）sail on regular routes.
A. Light ships B. Lift crafts C. Liners D. Tramps
Pass the spring round（）(卷筒),and then heave away easy.A....
单项选择题Pass the spring round（）(卷筒),and then heave away easy.
A.capstan B.bitt C.the drum D.winch
