单项选择题
A.solid materials such as wood or bales of fiber B.flammable liquids C.a piece of electrical equipment D.combustible metallic solids
A foam-type portable fire extinguisher is most useful i...
单项选择题A foam-type portable fire extinguisher is most useful in fighting a fire in（）.
A.generators B.oil drums C.the bridge controls D.combustible metals
A fixed CO2 system on a ship with a capacity of over 30...
单项选择题A fixed CO2 system on a ship with a capacity of over 300 lbs (136 kilograms) CO2 which protects spaces other than tanks must have（）.
A.two or more releasing stations B.automatic release in event of a fire C.an audible alarm and time delay D.an audible and visible alarm
A fire starts on your vessel while refueling. You shoul...
单项选择题A fire starts on your vessel while refueling. You should FIRST（）.
A.stop the ventilation B.sound the general alarm C.determine the source of the fire D.attempt to extinguish the fire
