A、the heat
B、the fuel
C、the oxygen
D、any of the above
更多“A fire can be extinguished by removing （）.”相关的问题
A、Any one component can be eliminated to extinguish a fire B、Any two components must be eliminated to properly extinguish a fire C、Any three components must be eliminated to properly extinguish a fire D、Ali four components must be eliminated to extinguish any fire
A、It is MOST effective on very hot oil fires where the temperatures of the liquid exceed 100°C (212°F) B、Most foams can be used with dry chemicals to attack a fire by two methods C、Foam is effective on combustible metal fires D、Foam can be made with seawater or fresh water
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
A、fixed foam systems to be ineffective B、faster cooling of the fire C、the accumulation of explosive gases D、the fire to spread through the ventilation system
A、Foam conducts electricity B、To be most effective，foam should be directed at the base of the fire C、Foam is most effective on burning liquids which are flowing D、Foam can ONLY be used to extinguish class A fires
A、A.the accumulation of explosive gases B、B.faster cooling of the fire C、C.the fire to spread through the ventilation system D、D.fixed foam systems to be ineffective
A、a mattress B、spilled liquids such as oil or paint C、high voltage electrical gear D、a trash can
A、a mattress B、spilled liquids such as oil or paint C、high voltage electrical gear D、a trash can
A、a mattress B、spilled liquids such as oil or paint C、high voltage electrical gear D、a trash can
A、should be worn while fighting a fire B、can be used in atmospheres deficient in oxygen C、filter contaminants from air that is to be breathed D、may be substituted for a self-contained breathing apparatus
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