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A foam-type portable fire extinguisher is most useful in fighting a fire in ______.
A.generators
B.oil drums
C.the bridge controls
D.combustible metals
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The most effective way of applying carbon dioxide from a portable extinguisher to a fire is by ______．A.Forming a cloud cover over the flamesB.Directing the gas at the base of the flames in a slow sweeping motionC.Discharging the carbon dioxide into the heart of the flamesD.Bouncing the discharge off an adjacent bulkhead just above the burning surface
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Fire in the cabins. Close all fire doors and use the （）powder extinguisher.A、dryB、wetC、foamD、portable
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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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单选题If you are fighting a fire below the main deck of your vessel，which action is most important concerning the stability of the vessel?（）.A
Shutting off electricity to damaged cablesB
Pumping fire-fighting water overboardC
Maneuvering the vessel so the fire is on the lee sideD
Removing burned debris from the cargo hold
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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The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to（）.A
shield fire fighters from radiant heatB
break up burning materialC
get the most water possible on the fireD
drive heat and smoke ahead of the fire fighters
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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
the bridge controlsD
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
electrical equipmentD
metallic solids
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单选题If you are fighting a fire below the main deck of your vessel，which action is most importantconcerning the stability of the vessel? （）A
Shutting off electricity to damaged cablesB
Pumping fire-fighting water overboardC
Maneuvering the vessel so the fire is on the lee sideD
Removing burned debris from the cargo hold
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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The FIRST course of action in fighting a fire in a cargo or fuel oil tank is to （）.A
secure all openings to the tankB
discharge an initial charge of CO2 with a hand portable extinguisherC
direct a fire hose into the tank and energize the fire mainD
spray the tank boundaries with a fire hose to promote cooling
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单选题Which portable fire extinguisher should be used on a class C fire on board a vessel?（）A
Carbon dioxideB
Water (stored pressure)C
FoamD
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
Foam
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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 fiberB
flammable liquidsC
a piece of electrical equipmentD
combustible metallic solids
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单选题The FIRST step to take in fighting an engine room fire resulting from a ruptured fuel oil service line, is to （）.A
evacuate all engine room personnelB
fight the fire with hand portable extinguishersC
activate the mainCO2 bankD
stop the flow of leaking fuel oil
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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What is the most important characteristic of the extinguishing agent in fighting a class C fire?（）A
WeightB
TemperatureC
Electrical nonconductivityD
Cost
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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The basic training in fire prevention and fire fighting should include the practical elements which should allow the trainees to acquire the ability to （）.A
use self-contained breathing apparatusB
use various types of portable fire extinguishersC
effect a rescue in a smoke-filled space wearing breathing apparatusD
All of the above
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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
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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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