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单选题
A foam-type portable fire extinguisher would be most useful in combating a fire in（）.
A
soild materials such as wood or bales of fiber
B
flammable liquids
C
a piece of electrical equipment
D
combustible metallic solids
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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
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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 is most useful in fighting a fire in（）.A
generatorsB
oil drumsC
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combustible metals
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单选题Foam-type portable fire extinguishers are most useful in combating fires involving（）.A
solid materials such as wood or bales of fiberB
inflammable liquidsC
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单选题Portable foam type fire extinguishers are most effective on（）.A
mattress firesB
oil firesC
wood firesD
All of the above
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单选题How do you operate a portable CO2 fire extinguisher?（）A
Point the horn downB
Turn cylinder upside-downC
Break the rupture discD
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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
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combustible metals
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Water (stored pressure)C
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Carbon tetrachloride
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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
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单选题A portable dry chemical fire extinguisher discharges by（）.A
gravity when the extinguisher is turned upside downB
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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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high voltage electrical gearD
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generatorsB
oil drumsC
the bridgeD
combustible metals
考题
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
考题
单选题Each hand portable fire extinguisher must be marked with（）.A
the name of the vessel on which it is locatedB
the date that it was installedC
the names of the individuals qualified to use itD
an identification number
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