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
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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
A.during abandon drill
B.during fire drill
C.weekly
D.when the rig is being moved
最新試題
Radiation spreads a fire by（）.
Lifesaving regulations require that a fire drill include（）.
One of the limitations of foam as an extinguishing agent is that foam（）.
The BEST method of applying foam to a fire is to（）.
The bilge pump on a fishing vessel（）.
Portable foam type fire extinguishers are most effective on（）.
On a ship，when may a work vest be substituted for a required life preserver?（）
Small quantities of flammable liquids needed at a work site should be（）.
Each crewmember has an assigned firefighting station. This assignment is shown on the（）.
One disadvantage of using regular dry chemical (sodium bicarbonate) in firefighting is that（）.