A.is a finer，more diffuse water spray than low-velocity fog
B.requires that the water pressure be no greater than 60 psi
C.produces an effective fog pattern no more than 6 feet beyond the nozzle
D.extinguishes a fire by absorbing heat and reducing the supply of oxygen
您可能感興趣的試卷
你可能感興趣的試題
A.at the top of the flames
B.at the base of the fire near the edge
C.in short quick bursts
D.toward the upwind side of the fire
A.Fires in electrical equipment
B.Flammable oils and greases
C.Class A fires in ordinary combustibles
D.Materials containing their own oxygen
A.cooling
B.smothering
C.shielding of radiant heat
D.breaking the chain reaction
A.breaking the chain reaction
B.smothering the fire
C.cooling the fire
D.coating the fuel with a nonflammable surface
A.base of the equipment
B.top of the equipment
C.power source
D.source of the fire
最新試題
Except in rare cases，it is impossible to extinguish a shipboard fire by（）.
Fire in an engine compartment is best extinguished with carbon dioxide gas (CO2) and by（）.
Foam extinguishes a fire mainly by（）.
High-velocity fog（）.
Halon extinguishers used on a class C fire should be directed at the（）.
How do you operate a portable CO2 fire extinguisher?（）.
Flames from small leaks of LFG may be extinguished by（）.
CO2 cylinders equipped with pressure actuated discharge heads will discharge automatically when（）.
Fire extinguishers of sizes III，IV，and V are designated as（）.
Halon fire extinguishers are NOT effective when used on which types of fires?（）