A.for
B.in
C.during
D.to
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A.replace the gasket in the male coupling
B.reduce fire pump pressure
C.replace the gasket in the female coupling
D.rethread the male coupling
A.glycerine
B.graphite
C.kerosene
D.fresh water and soap
A.Slow down the spread of fire by cooling adjacent structures
B.Cover the fire with foam
C.Smother the fire with a blanket or similar object
D.Break up solid objects to ensure that any deep seated fires are extinguished
A.shutting off the oxygen supply
B.cooling surfaces adjacent to the fire
C.removing combustibles from the endangered area
D.removing smoke and toxic gases by ensuring adequate ventilation
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
A.dry chemical
B.alcohol foam
C.carbon dioxide
D.All of the above
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.cool the craft in a fire
B.cool the engine
C.spray oil on the sea to calm it
D.spray personnel during a fire
A.The rated capacity in gallons，quarts，or pounds
B.The hydrostatic test date of the cylinder
C.The name of the item
D.An identifying mark of the actual manufacturer
A.fight an electrical fire
B.fight a magnesium fire
C.eliminate smoke from a compartment
D.All of the above
最新試題
Triethylene glycol fires may be extinguished by（）.
What does the term head mean when applied to a fire pump?（）
There are two disadvantages to CO2 pump as a firefighting agent. One of these is the limited quantity available，and the other is（）.
What does blowing tubes accomplish?（）
What is NOT listed on the metallic name plate required to be attached to hand portable fire extinguishers?（）
What is the most vulnerable part of the fire main system on board an offshore rig?（）
To remedy a leaking fire hose connection at the hydrant，secure the valve and（）.
What is NOT a characteristic of carbon dioxide fire-extinguishing agents?（）
Under the regulations for cargo vessels，which statement is TRUE concerning fireman’s outfits?（）
Traditionally，the signal for fire aboard ship is（）.