A. on watch B. taking watches C. standing watches D. keep watches
单项选择题What()(航速)?
A.speed B.line C.wake D.route
单项选择题()(尾) thrust half to part!
A.Bow B.Stern C.Tail D.After
单项选择题We need an experienced()(一水).
A.AB B.seaman C.OS D.agent
单项选择题Ring the forecastle()(钟).
A.bell B.clock C.hammer D.spanner
单项选择题Modern ships are navigated by()(卫星).
A.moon B.satellite C.sextant D.radar