单选题How does foam extinguish an oil fire?()ABy cooling the oil below the ignition temperatureBBy removing the fuel source from the fireCBy excluding the oxygen from the fireDBy increasing the weight of the oil
单选题
How does foam extinguish an oil fire?()
A
By cooling the oil below the ignition temperature
B
By removing the fuel source from the fire
C
By excluding the oxygen from the fire
D
By increasing the weight of the oil
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相关考题:
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
The BEST method of applying foam to a fire is to ______.A.spray directly on the base of the fireB.flow the foam down a nearby vertical surfaceC.sweep the fire with the foamD.spray directly on the surface of the fire
The class of fire on which a blanketing effect is essential to extinguish the fire isA.Class 'A'B.Class 'B'C.Class 'C'D.Class 'D'
In the event of a small bunker oil spill on deck occurring while bunkering, you should ____.A.wash down the area immediately with a fire hoseB.wash down the area with keroseneC.cover the area with absorbent materialD.cover the area with foam
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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
Never extinguish oil and electrical fires with ().A、waterB、foam extinguisherC、CO2 extinguisherD、portable extinguisher
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单选题What is an advantage of using foam in fire fighting?()AIt is MOST effective on very hot oil fires where the temperatures of the liquid exceed 100°C (212°F)BMost foams can be used with dry chemicals to attack a fire by two methodsCFoam is effective on combustible metal firesDFoam can be made with seawater or fresh water
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单选题Which statement about firefighting foam is TRUE?()AFoam conducts electricityBTo be most effective,foam should be directed at the base of the fireCFoam is most effective on burning liquids which are flowingDFoam can ONLY be used to extinguish class A fires
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单选题The class of fire on which a blanketing effect is essential to extinguish the fire is ().Aclass ABclass BCclass CDclass D
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