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
Under the regulations for cargo vessels，which statement is TRUE concerning fireman’s outfits?（）
The ventilation system of your ship has fire dampers restrained by fusible links. Which statement is TRUE?（）
What is an advantage of using foam in fire fighting?（）
Triethylene glycol fires may be extinguished by（）.
The spread of fire is prevented by（）.
The sprinkler system of a survival craft is used to（）.
The wooden plug inserted in the vent of a damaged tank of a ship should be removed in case it is decided to（）.
What is the most important characteristic of the extinguishing agent in fighting a class C fire?（）
What is required in addition to the heat，fuel，and oxygen of the fire triangle to have a fire?（）
What is best suited for fighting a fire in a ballast control room?（）