A.release CO2 to the protected space
B.secure all mechanical ventilation in the protected space
C.sound the rig's general alarm signal for a fire
D.sound an alarm in the ballast control room
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A.cannot be made with salt water
B.is heavier than oil and sinks below its surface
C.is corrosive and a hazard to fire fighters
D.conducts electricity
A.it can break down under high heat and emit noxious fumes
B.it will decompose under prolonged storage and lose its effectiveness
C.fire has been known to flash back over the surface of an oil fire
D.it is ineffective in fighting fires in high-voltage electrical equipment
A.can fit any size hose
B.converts a stream of water into a fog
C.increases the amount of water reaching the fire
D.can spray two streams of water at the same time
A.a vessel is equipped with an automatic smoke or fire detecting system
B.the cargo hatches are of steel construction
C.the cargo is of a nonflammable type
D.there is sufficient fire protection located on the main deck adjacent to the cargo hatch
A.To replace a damaged life preserver
B.For use during fire drills
C.For use during boat drills
D.At no time
最新試題
The discharge from a carbon dioxide fire extinguisher should be directed（）.
The collision bulkhead shall be of（）.
Recharging a previously used cartridge-operated dry-chemical extinguisher is accomplished by（）.
The bilge pump on a fishing vessel（）.
Overhauling a fire in the living quarters on a vessel must include（）.
Small quantities of flammable liquids needed at a work site should be（）.
The best method of extinguishing a class A fire is to（）.
Operation of the valve control release on a fixed CO2 system must immediately（）.
The canvas covering of fire hose is called the（）.
The atmosphere in a tank is too lean if it is（）.