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 foam-type portable fire extinguisher would be most useful in combating a fire in ______.
A.solid materials such as wood or bales of fiber
B.flammable liquids
C.a piece of electrical equipment
D.combustible metallic solid
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 is most useful in fighting a fire in ______.A.generatorsB.oil drumsC.the bridge controlsD.combustible metals
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
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
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Portable foam type fire extinguishers are most effective on（）.Amattress firesBoil firesCwood firesDAll of the above
单选题How do you operate a portable CO2 fire extinguisher?（）APoint the horn downBTurn cylinder upside-downCBreak the rupture discDPull pin，squeeze grip
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?（）ADry chemicalBHalonCLow velocity fogDSteam
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A portable dry chemical fire extinguisher discharges by（）.Agravity when the extinguisher is turned upside downBpressure from a small CO2 cartridge on the extinguisherCair pressure from the hand pump attached to the extinguisherDpressure from the reaction when water is mixed with the chemical
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An ABC dry chemical fire extinguisher would be LEAST effective against a fire in（）.Aa mattressBspilled liquids such as oil or paintChigh voltage electrical gearDa trash can
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What is the best title for this passage?AThe Dangers of a Fire.BThe Cause of a Fire.CLearn to Use a Fire Extinguisher.DBe Ready for a 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