（）is best for electrical fire.A、Dry extinguisherB、Power extinguisherC、A+BD、CO2 extinguisher
（）is best for electrical fire.
- A、Dry extinguisher
- B、Power extinguisher
- C、A+B
- D、CO2 extinguisher
相关考题：
On a vessel, a CO2 extinguisher is checked by ______.A.reading the gage pressureB.weighing the extinguisherC.discharging a small amount of CO2D.seeing if the seal has been broken
Which of the following is (are)an advantage of a dry chemical extinguisher over a carbon dioxide extinguisher？The dry chemical extinguisher：Ⅰ．Has a greater range．Ⅱ．Provides a heat shield for the operator．A.ⅠonlyB.ⅡonlyC.Both Ⅰand ⅡD.Neither Ⅰ nor Ⅱ
The best treatment for preventing traumatic shock after an accident is to ______.A.have the victim exercise to increase circulationB.keep the victim from electrical equipmentC.keep the victim warm and dry while lying downD.apply ice packs and avoid excitement
Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?A.Test the pressure gauge for correct readingB.Weigh the cartridgeC.Replace the dry chemicalD.Pressure test the discharge hose
Inspection of a Halon extinguisher involves checking the hose，handle，nozzle，and ______.A.sight glassB.weighing the extinguisherC.service technicians reportD.last date it was charged
______, 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 portable dry chemical fire extinguisher discharges by ______.A.gravity when the extinguisher is turned upside downB.pressure from a small CO2 cartridge on the extinguisherC.air pressure from the hand pump attached to the extinguisherD.pressure from the reaction when water is mixed with the chemical
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
An engine compartment gasoline fire requires which type of extinguisher?______.A.Carbon dioxideB.Dry chemicalC.FoamD.All of the above
In order to discharge a CO2 portable fire extinguisher, the operator must FIRST ______.A.invert the CO2 extinguisherB.squeeze the two trigger handles togetherC.remove the locking pinD.open the discharge valve
Close all fire doors and use the （）（干粉灭火器）.A、dry powder extinguisherB、foam extinguisherC、CO2 extinguisherD、portable extinguisher
CO2 and Halon extinguishers are used for electrical fire, as well as （）fire.A、commonB、oilC、electricalD、chemical
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.
Never extinguish oil and electrical fires with （）.A、waterB、foam extinguisherC、CO2 extinguisherD、portable extinguisher
下面哪一个打开备用电源的操作顺序是正确的？A、I 打开Standby electrical power。II 打开E-inverter。 III 打开TRU。B、I 打开Standby electrical power。II 打开TRU。 III 打开E-inverter。C、I 打开E-inverter。II 打开TRU。 III 打开Standby electrical power。D、I 打开TRU。II 打开E-inverter。 III 打开Standby electrical power。
单选题When electrical equipment is involved in a fire，the stream of dry chemicals should be（）.Aaimed at the source of the flamesBfogged above the equipmentCshot off a flat surface onto the flamesDused to shield against electrical shock
单选题Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?（）ATest the pressure gauge for correct readingBWeigh the cartridgeCReplace the dry chemicalDPressure test the discharge hose
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The best treatment for preventing traumatic shock after an accident is to（）.Ahave the victim exercise to increase circulationBkeep the victim from electrical equipmentCkeep the victim warm and dry while lying downDapply ice packs and avoid excitement
单选题Never extinguish oil and electrical fires with （）.AwaterBfoam extinguisherCCO2 extinguisherDportable 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 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