更多"Fire extinguishing agents used on C"的相关试题:
[单项选择]Which of the fire extinguishing agents listed is the safest to use when combating a class C fire?（）
A. CO2
B. Foam
C. Water fog
D. Soda acid
[单项选择]Which of the listed extinguishing agents is NOT suitable for fighting a liquid paint fire?（）
A. Dry chemical
B. Foam
C. Water
D. Carbon dioxide
[单项选择]0f all the extinguishing agents listed below, which one has the greatest capacity for heat adsorption?（）.
A. Water fog
B. Carbon dioxide
C. Dry chemical
D. Solid stream of water
[单项选择]Halon extinguishers used on a class C fire should be directed at the（）.
A. base of the equipment
B. top of the equipment
C. power source
D. source of the fire
[单项选择]Any extinguishing agent used on a Class C fire must have which important property?（）
A. Cooling ability
B. Leaves no residue
C. Penetrating power
D. Nonconductivity
[单项选择]Halon from extinguishers used on a class B fire，should be directed（）.
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
[单项选择]On a class B fire，which portable fire extinguisher would be the LEAST desirable?（）
A. Carbon dioxide
B. Water (stored pressure)
C. Dry chemical
D. Foam
[单项选择]Dry chemical extinguishers extinguish class B fires to the greatest extent by（）.
A. cooling
B. smothering
C. oxygen dilution
D. breaking the chain reaction
[单项选择]A class C fire would be burning（）.
A. fuel oil
B. wood
C. celluloid
D. electrical insulation
[单项选择]The best method of extinguishing a class A fire is to （）.
A. remove oxygen from the area
B. smother fire with foam
C. smother fire with CO2
D. cool fuel below ignition temperature
[单项选择]The class of fire on which a blanketing effect is essential to extinguish the fire is （）.
A. class A
B. class B
C. class C
D. class D
[单项选择]A class B fire is most successfully fought by（）.
A. preventing oxygen from reaching the burning material
B. cooling the burning material below its ignition temperature
C. using the extinguishing agent to make the burning material fire-resistant
D. using the extinguishing agent to absorb the heat
[单项选择]If ignited，which material would be a class B fire?（）
A. Magnesium
B. Paper
C. Wood
D. Diesel Oil
[单项选择]Any extinguishing agent used on a Class “C” fire must have which important property? （）
A. Cooling ability
B. Leaves no residue
C. Penetrating power
D. Nonconductivity
[单项选择]Class B fires are best extinguished by smothering, i-e（）.
A. deprival of oxygen
B. removal of heat
C. spraying of water
D. injecting of soda-acid
[单项选择]Class A fires are best extinguished by quenching or cooling with （）.
A. deprival of oxygen
B. a water spray
C. soda-acid
D. foam
[单项选择]Class C fires are best extinguished by （）.
A. foam extinguishers
B. water spray equipment
C. dry powder extinguishers
D. soda-acid extinguishers
[单项选择]Fire extinguishers used on ship’s are numbered by size I through V，with I being（）.
A. used for electrical fires only
B. the smallest
C. the most accessible
D. the most effective
