A.Eliminates unburned fuel oil residues from the firebox
B.Increases boiler efficiency
C.Flushes away mineral deposits inside the water tubes
D.Cleans soot deposits from the inside of the stack
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A.Smothers burning surfaces，organically destroys fuel
B.Cools fire and adjacent surfaces，provides protective barrier
C.Reaches areas not protected by steam or CO2 smothering systems
D.Allows fire to be attacked from leeward，saturates liquid surfaces
A.CO2 (carbon dioxide) fire extinguishers
B.foam fire extinguishers
C.water (stored pressure) fire extinguishers
D.All of the above
A.fight an electrical fire
B.fight a magnesium fire
C.eliminate smoke from a compartment
D.All of the above
A.convection
B.conduction
C.radiation
D.spontaneous combustion
A.If a vessel carries two outfits，they may be stored in the same location
B.Each fireman's outfit shall contain a flame safety lamp of an approved type
C.Each fireman's outfit shall contain a fresh-air breathing apparatus
D.All of the above
最新試題
What is best suited for fighting a fire in a ballast control room?（）
What does blowing tubes accomplish?（）
The wooden plug inserted in the vent of a damaged tank of a ship should be removed in case it is decided to（）.
The spread of fire is prevented by（）.
What is meant by the term overhaul in firefighting?（）
To determine if a CO2 fire extinguisher is fully charged，you would（）.
There are two disadvantages to CO2 pump as a firefighting agent. One of these is the limited quantity available，and the other is（）.
Weight is considered during the periodic required inspection and servicing of（）.
To lubricate the swivel or remove corrosion from a fire hose coupling，you should use（）.
The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to（）.