单项选择题
A.starting the fire pumps
B.checking the operation of watertight doors
C.checking arrangements for abandon ship
D.All of the above
单项选择题 How long must the records of tests and inspections of fire fighting equipment on board a ship be retained on board?（）
单项选择题 Each crewmember has an assigned firefighting station. This assignment is shown on the（）.
单项选择题 An advantage of an ABC dry chemical over a carbon dioxide extinguisher is（）.