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Never extinguish oil and electrical fires with （）.
- A、water
- B、foam extinguisher
- C、CO2 extinguisher
- D、portable extinguisher
参考答案
更多 “Never extinguish oil and electrical fires with （）.A、waterB、foam extinguisherC、CO2 extinguisherD、portable extinguisher” 相关考题
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Dry powder is used to put out ________A.electrical fireB.oil fireC.common firesD.all kinds of fires
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One of the limitations of foam as an extinguishing agent is that foam ______.A.cannot be made with salt waterB.is heavier than oil and sinks below its surfaceC.is corrosive and a hazard to fire fightersD.conducts electricity
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A foam-type portable fire extinguisher is most useful in fighting a fire in ______.A.generatorsB.oil drumsC.the bridge controlsD.combustible metals
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A foam-type portable fire extinguisher would be most useful in combating a fire in ______.A.solid materials such as wood or bales of fiberB.flammable liquidsC.a piece of electrical equipmentD.combustible metallic solid
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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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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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After using a CO2 portable extinguisher, it should be ______.A.put back in service if some CO2 remainsB.hydrostatically testedC.retaggedD.Recharged
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As an extinguishing agent, foam ______.A.conducts electricityB.should be directed at the base of the fireC.is most efffective on buring gases which are flowingD.extinguishes by cooling oil fires below ignition temperature
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Foam-type portable fire extinguishers are most useful in combating fires involving ______.A.solid materials such as wood or bales of fiberB.inflammable liquidsC.electrical equipmentD.metallic solids
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How does foam extinguish an oil fire ?______.A.By cooling the oil below the ignition temperatureB.By removing the fuel souce from the fireC.By excluding the oxygen from the fireD.By increasing the weight of the oil
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Close all fire doors and use the （）（干粉灭火器）.A、dry powder extinguisherB、foam extinguisherC、CO2 extinguisherD、portable extinguisher
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Carry （）（手提灭火器）to the fire place.A、extinguishersB、portable extinguishersC、dry foam extinguishersD、CO2 extinguishers
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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Foam-type portable fire extinguishers are more usefull in combating fires involving（）.A
solid materials such as wood or bales of fiberB
inflammable liquidsC
electrical equipmentD
metallic solids
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单选题A foam-type portable fire extinguisher would be most useful in combating a fire in（）.A
solid materials such as wood or bales of fiberB
flammable liquidsC
a piece of electrical equipmentD
combustible metallic solids
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单选题A foam-type portable fire extinguisher is most useful in fighting a fire in（）.A
generatorsB
oil drumsC
the bridge controlsD
combustible metals
考题
单选题Never extinguish oil and electrical fires with （）.A
waterB
foam extinguisherC
CO2 extinguisherD
portable extinguisher
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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Which statement about firefighting foam is TRUE?（）A
Foam conducts electricityB
To be most effective，foam should be directed at the base of the fireC
Foam is most effective on burning liquids which are flowingD
Foam can ONLY be used to extinguish class A fires
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单选题Which types of portable fire extinguishers are designed for use on electrical fires?（）A
Dry chemical and carbon dioxideB
Foam (stored pressure) and soda-acidC
Carbon dioxide and foam (stored pressure)D
Dry chemical and soda-acid
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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A portable foam fire extinguisher is placed in operation by（）A
turning it upside downB
pressing the foam leverC
squeezing the grip handleD
opening the hose valve
考题
单选题As an extinguishing agent,foam（）.A
couducts electricityB
should be directed at the base of the fireC
is most effective on burning gases which are flowingD
extinguishes by cooling oil fires blow ignition temperature
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