A、using a 2-1/2 inch hose
B、there is an outlet for the smoke and heat
C、the fire is totally contained by the ship's structure
D、at least two fog streams can be used
更多“A high-velocity fog stream can be used in fire fighting situations to drive heat and smoke ahead of the fire fighters in a passageway. This technique should only be used when（）.”相关的问题
A、greater range than high-velocity fog B、lesser range than high-velocity fog C、about the same range as high-velocity fog D、greater range than a solid stream
A、low-velocity fog B、high-velocity fog C、a straight stream of water D、foam spray
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
A、a difference in water pressure B、the method of breaking up the water stream C、the length of the applicator D、All of the above
A、pressure builds up in the nozzle which causes a surge of water B、the only opening in a passageway is the one from which the nozzle is being advanced C、pressure in the fire hose drops below 100 psi D、a bulkhead collapses due to heat and pressure
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