单选题A class B fire is most successfully fought by（）.Apreventing oxygen from reaching the burning materialBcooling the burning material below its ignition temperatureCusing the extinguishing agent to make the burning material fire-resistantDusing the extinguishing agent to absorb the heat
单选题
A class B fire is most successfully fought by（）.
A
preventing oxygen from reaching the burning material
B
cooling the burning material below its ignition temperature
C
using the extinguishing agent to make the burning material fire-resistant
D
using the extinguishing agent to absorb the heat
参考解析
解析：
暂无解析
相关考题：
Which of the following statements is true?A. The author's father built a bonfire on VE Day.B. The author's father had fought in the First World War.C. The author's father had fought in the Second World War.D. The author's father threw two chairs on the fire to keep it going.
The class of fire on which a blanketing effect is essential to extinguish the fire isA.Class 'A'B.Class 'B'C.Class 'C'D.Class 'D'
A fire in a pile of dunnage would be classified as a _____.A.class AB.class BC.class CD.class D
A fire involving trash and paper waste would be classified as a ______.A.class AB.class BC.class CD.class D
A large oil fire on the deck of a ship can be fought most effectively with ______.A.dry chemicalB.foamC.high-velocity fogD.water (cartridge-operated)、
All portable fire extinguishers must be capable of being ______.A.carried by hand to a fireB.carried or rolled to a fireC.recharged in the fieldD.used on class “B” fire
单选题A class "B" fire would most likely occur in the （）.Amain switchboardBengine room bilgeCbreathing compartmentDelectric fresh water transfer pump
单选题A large oil fire on the deck of a ship can be fought most effectively with（）.Adry chemicalBfoamChigh-velocity fogDwater
单选题What is the most vulnerable part of the fire main system on board an offshore rig?（）AThe fire pumpBExposed hard pipingCThe hydrant valveDThe fire hose
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A foam-type portable fire extinguisher is most useful in fighting a fire in（）.AgeneratorsBoil drumsCthe bridge controlsDcombustible metals
单选题For which of the listed classes of fire combinations would carbon dioxide be most suitable as the extinguishing agent （）.AClass A and class BBClass B and class CCClass A and class CDClass C, class D, and class E
单选题Before attempting to put out a class “C” fire involving an electric-driven centrifugal pump, you should FIRST （）.Ainsulate your shoesBground the fire hoseCsecure its power supplyDstart the fire pump
单选题A large oil fire on the deck of a ship can be fought most effectively with（）.Adry chemicalBfoamChigh-velocity fogDWater (cartridge-operated)
单选题An example of class "A" fire is a/an （）.Aelectrical fire in the engine roomBoil fire in the engine room bilgesCoil fire involving a grade A petroleum productDmattress fire in a stateroom
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 class "C" fire would most likely occur in the （）.Aengine room bilgesBmain switchboardCpaint lockerDrag bin
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 of the fire extinguishing agents listed is the safest to use when combating a class C fire?（）ACO2BFoamCWater fogDSoda acid
单选题The best method of extinguishing a class A fire is to （）.Aremove oxygen from the areaBsmother fire with foamCsmother fire with CO2Dcool fuel below ignition temperature
单选题The class of fire on which a blanketing effect is essential to extinguish the fire is （）.Aclass ABclass BCclass CDclass D
单选题Halon from extinguishers used on a class B fire，should be directed（）.Aat the top of the flamesBat the base of the fire near the edgeCin short quick burstsDtoward the upwind side of the fire
单选题The narrator's father______.Ahad fought in the Second World WarBmay have suffered much during the previous warChelped build a bonfire on VE DayDadded something to the fire to keep it going too