A foam-type portable fire extinguisher is most useful in fighting a fire in ______.A.generatorsB.oil drumsC.the bridge controlsD.combustible metals
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
相关考题：
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
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
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
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
Fire in the cabins. Close all fire doors and use the （）powder extinguisher.A、dryB、wetC、foamD、portable
Close all fire doors and use the （）（干粉灭火器）.A、dry powder extinguisherB、foam extinguisherC、CO2 extinguisherD、portable extinguisher
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?（）.AShutting off electricity to damaged cablesBPumping fire-fighting water overboardCManeuvering the vessel so the fire is on the lee sideDRemoving burned debris from the cargo hold
单选题A portable foam fire extinguisher is placed in operation by（）Aturning it upside downBpressing the foam leverCsqueezing the grip handleDopening the hose valve
单选题The straight stream capability of an all-purpose nozzle is used in fighting a class A fire to（）.Ashield fire fighters from radiant heatBbreak up burning materialCget the most water possible on the fireDdrive heat and smoke ahead of the fire fighters
单选题Foam-type portable fire extinguishers are more usefull in combating fires involving（）.Asolid materials such as wood or bales of fiberBinflammable liquidsCelectrical equipmentDmetallic solids
单选题A foam-type portable fire extinguisher is most useful in fighting a fire in（）.AgeneratorsBoil drumsCthe bridge controlsDcombustible metals
单选题Foam-type portable fire extinguishers are most useful in combating fires involving（）.Asolid materials such as wood or bales of fiberBinflammable liquidsCelectrical equipmentDmetallic solids
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? （）AShutting off electricity to damaged cablesBPumping fire-fighting water overboardCManeuvering the vessel so the fire is on the lee sideDRemoving burned debris from the cargo hold
单选题A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.AgeneratorsBoil drumsCthe bridge controlsDcombustible metals
单选题The FIRST course of action in fighting a fire in a cargo or fuel oil tank is to （）.Asecure all openings to the tankBdischarge an initial charge of CO2 with a hand portable extinguisherCdirect a fire hose into the tank and energize the fire mainDspray the tank boundaries with a fire hose to promote cooling
单选题Which portable fire extinguisher should be used on a class C fire on board a vessel?（）ACarbon dioxideBWater (stored pressure)CFoamDCarbon tetrachloride
单选题On a class B fire，which portable fire extinguisher would be the LEAST desirable?（）ACarbon dioxideBWater (stored pressure)CDry chemicalDFoam
单选题A foam-type portable fire extinguisher would be most useful in combating a fire in（）.Asoild materials such as wood or bales of fiberBflammable liquidsCa piece of electrical equipmentDcombustible metallic solids
单选题The FIRST step to take in fighting an engine room fire resulting from a ruptured fuel oil service line, is to （）.Aevacuate all engine room personnelBfight the fire with hand portable extinguishersCactivate the mainCO2 bankDstop the flow of leaking fuel oil
单选题关闭所有防火门并使用干粉灭火器。（）AClose all fire doors and use the dry powder extinguisher.BClose all fire doors and use the foam extinguisher.CClose all fire doors and use the CO2 extinguisher.DClose all fire rooms and use the dry powder extinguisher.
单选题What is the most important characteristic of the extinguishing agent in fighting a class C fire?（）AWeightBTemperatureCElectrical nonconductivityDCost
单选题Which types of portable extinguisher should you watch for the reflash of the fire?（）Afoam and waterBCO2 and dry chemicalCdry chemical and waterDfoam and CO2
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 （）.Ause self-contained breathing apparatusBuse various types of portable fire extinguishersCeffect a rescue in a smoke-filled space wearing breathing apparatusDAll of the above
单选题A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in（）.AgeneratorsBoil drumsCthe bridgeDcombustible metals
单选题Which is the proper method of determining whether a portable CO2 fire extinguisher needs recharging?（）ACheck the tag to see when the extinguisher was last chargedBRelease a small amount of CO2; if the CO2 discharges，the extinguisher is acceptableCWeigh the extinguisher and compare the weight against that stamped on the valveDRecharge the extinguisher at least once each year
单选题When fighting a fire with a portable dry chemical fire extinguisher，the stream should be directed（）.Aover the top of the flamesBoff a bulkhead into the fireCin front of the fireDat the base of the fire
单选题Each hand portable fire extinguisher must be marked with（）.Athe name of the vessel on which it is locatedBthe date that it was installedCthe names of the individuals qualified to use itDan identification number