A.sea B.ballast C.fresh D.cement
单项选择题The sailor keeping ()watch should clean the gangway, the rails, bulwark and the spaces around the gangway.
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