更多"The best method of extinguishing a "的相关试题:
[单项选择]The best method of extinguishing a class A fire is to（）.
A. remove oxygen from the area
B. cool fuel below ignition temperature
C. smother with CO2
D. smother fire with foam
[单项选择]What method of extinguishing fire in a hatch is the best to minimize damages to the cargoes?（）.
A. Foam
B. CO2
C. Water
D. All of the above
[单项选择]After extinguishing a paint locker fire using the fixed CO2 system，the next action is to have the space（）.
A. opened and burned material removed
B. left closed with vents off until all boundaries are cool
C. checked for oxygen content
D. doused with water to prevent reflash
[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]Which extinguishing agent is best for use on a magnesium fire?（）
A. Water
B. Sand
C. CO2
D. Dry chemical
[单项选择]Fire extinguishing agents used on Class C fires must be（）.
A. able to absorb heat
B. water based
C. nonconducting
D. nontoxic
[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]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]Which extinguishing agent is the best for use on electrical fires?（）
A. Foam
B. CO2
C. Dry chemical
D. Water fog
[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]After extinguishing a fire with CO2，it is advisable to（）.
A. use all CO2 available to cool the surrounding area
B. stand by with water or other agents
C. thoroughly ventilate the space of CO2
D. jettison all burning materials
[单项选择]After extinguishing a fire with C02,it is availabe to（）.
A. use all CO2 available to cool the surronding area
B. stand by with water or other agents
C. thoroughly ventilate the space of CO2
D. jettison all buring materials
[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]A class C fire would be burning（）.
A. fuel oil
B. wood
C. celluloid
D. electrical insulation
[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]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]The BEST method of applying foam to a fire is to（）.
A. spray directly on the base of the fire
B. flow the foam down a nearby vertical surface
C. sweep the fire with the foam
D. spray directly on the surface of the fire
[单项选择]The remote control for a fixed fire extinguishing system should be（）.
A. painted red and labeled
B. concealed from the crew
C. protected by plexiglass
D. padlocked
[单项选择]Which fire extinguishing agent has the greatest capacity for absorbing heat?（）
A. Water
B. Foam
C. Dry chemical
D. Carbon Dioxide
