单项选择题
A.black B.red C.orange D.yellow
During a fire drill on a ship，what action is required?（...
单项选择题During a fire drill on a ship，what action is required?（）
A.Start each fire pump B.Launch and run a lifeboat C.Inventory rescue and fire equipment D.Inspect fire hoses
Due to the hazards involved with Halon extinguishers on...
单项选择题Due to the hazards involved with Halon extinguishers on a ship，the size II extinguisher may only be used（）.
A.outside B.on class C fires C.in an emergency D.on class B fires
Dry chemical fire extinguishers are effective on which ...
单项选择题Dry chemical fire extinguishers are effective on which type(s) of fire?（）
A.Burning oil B.Electrical C.Paint D.All of the above
