单项选择题
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
A combination or all-purpose nozzle produces（）.A.low-ve...
单项选择题A combination or all-purpose nozzle produces（）.
A.low-velocity fog only B.a solid stream only C.a solid stream and foam D.a solid stream and fog
