单项选择题
A.navigation B.gangway C.port D.anchor
The sailor taking （）watch should do cleaning work on th...
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
The sailors do cleaning and repair work under the super...
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
Cleaning is a constant job （）board a ship.A.atB.onC.for...
单项选择题Cleaning is a constant job （）board a ship.
A.at B.on C.for D.with
