单项选择题
A.To replace a damaged life preserver B.For use during fire drills C.For use during boat drills D.At no time
On a ship，watertight doors should be operated（）.A.durin...
单项选择题On a ship，watertight doors should be operated（）.
A.during abandon drill B.during fire drill C.weekly D.when the rig is being moved
On a ship，a fire drill shall be conducted once every（）....
单项选择题On a ship，a fire drill shall be conducted once every（）.
A.week B.month C.crew change D.other week
Lifesaving regulations require that a fire drill includ...
单项选择题Lifesaving regulations require that a fire drill include（）.
A.starting the fire pumps B.checking the operation of watertight doors C.checking arrangements for abandon ship D.All of the above
