A.navigation B.gangway C.port D.anchor
单项选择题The sailor taking ()watch should do cleaning work on the bridge.
A. 0 to 4 B. 4 to 8 C. 8 to 12 D. 12 to 16
单项选择题The sailors do cleaning and repair work under the supervision of the ().
A. chief officer B. captain C. bosun D. second officer
单项选择题Cleaning is a constant job ()board a ship.
A.at B.on C.for D.with
单项选择题Cleaning is a frequent ()on board a ship.
A.duty B.responsibility C.job D.work
单项选择题Please return it after ()it.
A.use B.used C.using D.to use