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An ABC dry chemical fire extinguisher would be LEAST effective against a fire in ______.
A.a mattress
B.spilled liquids such as oil or paint
C.high voltage electrical gear
D.a trash can
参考答案
更多 “ An ABC dry chemical fire extinguisher would be LEAST effective against a fire in ______.A.a mattressB.spilled liquids such as oil or paintC.high voltage electrical gearD.a trash can ” 相关考题
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Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?A.Test the pressure gauge for correct readingB.Weigh the cartridgeC.Replace the dry chemicalD.Pressure test the discharge hose
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______, as the chemical extinguisher agent, should be used for an electric fire.A.dry chemical or foamB.foam or soda acidC.carbon dioxide or foamD.carbon dioxide or dry chemical
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A portable dry chemical fire extinguisher discharges by ______.A.gravity when the extinguisher is turned upside downB.pressure from a small CO2 cartridge on the extinguisherC.air pressure from the hand pump attached to the extinguisherD.pressure from the reaction when water is mixed with the chemical
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An advantage of a dry chemical over a carbon dioxide fire extinguisher is its ______.A.greater rangeB.effectiveness on all types of firesC.cleanlinessD.All of the above
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An advantage of an ABC dry chemical over a carbon dioxide fire extinguisher is ______.A.lack of toxicityB.the multipurpose extinguishing abilityC.burn-back protectionD.cooling ability
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An engine compartment gasoline fire requires which type of extinguisher?______.A.Carbon dioxideB.Dry chemicalC.FoamD.All of the above
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单选题Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?（）A
Test the pressure gauge for correct readingB
Weigh the cartridgeC
Replace the dry chemicalD
Pressure test the discharge hose
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单选题When must a dry chemical fire extinguisher be recharged?（）A
After each useB
When the air temperature exceeds 90°FC
Every 6 monthsD
Every 12 months
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单选题Flames from small leaks of LFG may be extinguished by（）.A
utilizing carbon dioxide or dry chemical fire extinguishersB
utilizing soda and acid fire extinguishersC
blowing the flames outD
letting it burn itself out
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单选题What is an advantage of using foam in fire fighting?（）A
It is effective in controlling fire in flowing oil such as coming from a broken fuel lineB
It absorbs heat from materials that could cause reignitionC
Most foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishmentD
Once the surface is blanketed with foam and the fire is extinguished，no further foam is required
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单选题If a CO2 fire extinguisher is not readily available, which of the listed fire extinguishers would be best suited to combat a small electrical fire in a switchboard?（）A
Dry chemicalB
HalonC
Low velocity fogD
Steam
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单选题A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.A
generatorsB
oil drumsC
the bridge controlsD
combustible metals
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单选题（）as the chemical extinguisher agent, should be used for a an electric fire.A
Dry chemical or foamB
Foam or soda acidC
carbon dioxide or foamD
carbon dioxide or dry chemical
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单选题On a class B fire，which portable fire extinguisher would be the LEAST desirable?（）A
Carbon dioxideB
Water (stored pressure)C
Dry chemicalD
Foam
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单选题The type of extinguisher which should be used for an electricity fire is（）.A
foam or soda acidB
dry chemical or foamC
carbon dioxide or dry chemicalD
carbon dioxide or foam
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单选题A portable dry chemical fire extinguisher discharges by（）.A
gravity when the extinguisher is turned upside downB
pressure from a small CO2 cartridge on the extinguisherC
air pressure from the hand pump attached to the extinguisherD
pressure from the reaction when water is mixed with the chemical
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单选题关闭所有防火门并使用干粉灭火器。（）A
Close all fire doors and use the dry powder extinguisher.B
Close all fire doors and use the foam extinguisher.C
Close all fire doors and use the CO2 extinguisher.D
Close all fire rooms and use the dry powder extinguisher.
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单选题Which types of portable extinguisher should you watch for the reflash of the fire?（）A
foam and waterB
CO2 and dry chemicalC
dry chemical and waterD
foam and CO2
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单选题Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?（）A
Insure the chemical is powderyB
Replace the cartridgeC
Pressure test the discharge hoseD
Test the pressure gauge for proper operation
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单选题Recharging a previously used cartridge-operated dry-chemical extinguisher is accomplished by（）.A
authorized fire equipment servicing personnel onlyB
replacing the propellent cartridge and refilling with powderC
puncturing the cartridge seal after installationD
recharging the cartridge and refilling it with powder
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单选题An ABC dry chemical fire extinguisher would be LEAST effective against a fire in（）.A
a mattressB
spilled liquids such as oil or paintC
high voltage electrical gearD
a trash can
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单选题A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.A
generatorsB
oil drumsC
the bridgeD
combustible metals
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单选题Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?（）A
Check the tag to see when the extinguisher was last chargedB
Release a small amount of CO2; if the CO2 discharges，the extinguisher is acceptableC
Weigh the extinguisher and compare the weight against that stamped on the valveD
Recharge the extinguisher at least once each year
考题
单选题When fighting a fire with a portable dry chemical fire extinguisher，the stream should be directed（）.A
over the top of the flamesB
off a bulkhead into the fireC
in front of the fireD
at the base of the fire
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单选题An advantage of a dry chemical over a carbon dioxide fire extinguisher is its（）.A
greater rangeB
effectiveness on all types of firesC
cleanlinessD
All of the above
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单选题Dry chemical fire extinguishers are effective on which type(s) of fire?（）A
Burning oilB
ElectricalC
PaintD
All of the above
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