单选题A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be（）.Areplaced in its proper location if weight loss is no more than 15%Breplaced in its proper location if weight loss is no more than 25%Clabeled empty and recharged as soon as possibleDlabeled empty and replaced in its proper location regardless of weight
单选题
A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be（）.
A
replaced in its proper location if weight loss is no more than 15%
B
replaced in its proper location if weight loss is no more than 25%
C
labeled empty and recharged as soon as possible
D
labeled empty and replaced in its proper location regardless of weight
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Portable carbon dioxide fire extinguishers should be sent ashore to be rechargedA.when the remaining charge volume is less than 90 percent of the required volumeB.at each inspection for certificationC.at each annual inspectionD.when the weight loss exceeds 10% of weight of charge
A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged.It should be ______.A.replaced in its proper location if weight loss is no more than 15%B.replaced in its proper location if weight loss is no more than 25%C.labeled empty and recharged as soon as possibleD.labeled empty and replaced in its proper location regardless of weight
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
______, as the chemical extinguisher agent, should be used for an electric fire.A.dry chemical or foamB.foam or soda acidC.carbon dioxide or foamD.carbon dioxide or dry chemical
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 engine compartment gasoline fire requires which type of extinguisher?______.A.Carbon dioxideB.Dry chemicalC.FoamD.All of the above
单选题A fuel line breaks, sprays fuel on the hot exhaust manifold, and catches fire. Your first action should be to（）.ABatten down the engine roomBstart the fire pumpCapply carbon dioxide to the fireDshut off the fuel supply
单选题The discharge from a carbon dioxide fire extinguisher should be directed（）.Aat the base of the flamesBat the center of the flamesCto the lee side of the flamesDover the tops of the flames
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Portable foam type fire extinguishers are most effective on（）.Amattress firesBoil firesCwood firesDAll of the above
单选题Flames from small leaks of LFG may be extinguished by（）.Autilizing carbon dioxide or dry chemical fire extinguishersButilizing soda and acid fire extinguishersCblowing the flames outDletting it burn itself out
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Weight is considered during the periodic required inspection and servicing of（）.ACO2 (carbon dioxide) fire extinguishersBfoam fire extinguishersCwater (stored pressure) fire extinguishersDAll of the above
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Portable carbon dioxide fire extinguishers should be sent ashore to be recharged （）.Awhen the remaining charge volume is less than 90 percent of the required VOLUMEBat each inspection for certificationCat each annual inspectionDwhen the weight loss exceeds 10% of weight of charge
单选题An advantage of a dry chemical over a carbon dioxide fire extinguish is its（）.Agreater rangeBeffective on all types of firesCcleanlinessDAll of the above
单选题The type of extinguisher which should be used for an electricity fire is（）.Afoam or soda acidBdry chemical or foamCcarbon dioxide or dry chemicalDcarbon dioxide or foam
单选题A squeeze-grip type carbon dioxide portable fire extinguisher has been partially discharged. It should be（）.Alabeled empty and recharged as soon as possibleBreplaced in its proper location if weight loss is no more than 25%Creplaced in its proper location regardless of weightDreplaced in its proper location if weight loss is no more than 15%
单选题Carbon dioxide as a fire fighting agent has which advantage over other agents?（）.AIt causes minimal damageBIt is safe for personnelCIt is cheaperDIt is most effective on a per unit basis
单选题When fighting a fire on a bulkhead using a portable carbon dioxide extinguisher，the stream should be directed at the（）.Abase of the flames，moving the horn from side to side，following the flames upward as they diminishBtop of the flaming area，moving the horn from side to side，following the flames downward as they diminishCcenter of the flaming area，moving the horn vertically from top to bottomDbottom of the flaming area，moving the horn vertically to the top following the flames upward as they diminish
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单选题Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?（）ACarbon dioxide is corrosive when exposed to fireBCarbon dioxide should be applied slowly to a large engine room fireCIts total cooling effect is far greater than waterDIts smothering effect is excellent for class B fires
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