A.must be fixed if the vessel exceeds 12 meters in length
B.may be used as a fire pump
C.must be portable if there are more than 4 watertight compartments
D.must be capable of pumping at least 450 gpm
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A.remove oxygen from the area
B.cool fuel below ignition temperature
C.smother with CO2
D.smother fire with foam
A.spray directly on the base of the fire
B.flow the foam down a nearby vertical surface
C.sweep the fire with the foam
D.spray directly on the surface of the fire
A.incapable of supporting combustion because the hydrocarbon content is below the LFL (Lower Flammable Limit)
B.capable of supporting combustion because the hydrocarbon content is above the UFL (Upper Flammable Limit)
C.capable of supporting a fire once started
D.not safe for ballasting
A.pull the nozzle handle all the way back toward the operator
B.pull the nozzle handle back to a position where the handle is perpendicular to the plane of the nozzle
C.push the nozzle handle forward as far as it will go
D.insert a fog applicator between the fire hose and nozzle
A.used only under the supervision and direction of a ship's officer
B.tightly capped and stowed with other tools near the job site when securing at the end of the day
C.used only when a pressurized fire hose is laid out ready for immediate use
D.in a metal container with a tight cap
最新試題
The discharge from a carbon dioxide fire extinguisher should be directed（）.
One advantage of the all-purpose nozzle is that it（）.
Radiation spreads a fire by（）.
On a ship，a fire drill shall be conducted once every（）.
The collision bulkhead shall be of（）.
Prior to getting underway，the Master or person in charge of a ship must（）.
The disadvantage of using CO2 is that the（）.
On a ship，when may a work vest be substituted for a required life preserver?（）
The brickwork surrounding the firebox of a boiler is known as（）.
The BEST method of applying foam to a fire is to（）.