单选题CO2 and Halon extinguishers are used for electrical fire, as well as （）fire.AcommonBoilCelectricalDchemical
单选题
CO2 and Halon extinguishers are used for electrical fire, as well as （）fire.
A
common
B
oil
C
electrical
D
chemical
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When will the fire department come to conduct a fire prevention inspection in our company?A. Next month. I’ve checked hydrants and fire-extinguishers on each floorB.Next day. The manager will check hydrants and other equipment in the building.C.Next week. But hydrants and fire extinguishers on each floor has already been checkedD.The day before yesterday. I had already checked hydrants and fire extinguishers on each floor.
Halogenated hydrocarbon， Halon in short form，is used on board ship as ________ ．A.fire-extinguishing mediumB.a standard fire testC.a non-combustible materialD.a fire main
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
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
Which of the following is a class A fire?下列哪一项是A类火灾（）A、Halon 卤化烃(二氟二氯甲烷)B、electrical 电气类C、liquid 液体类
Carry （）（手提灭火器）to the fire place.A、extinguishersB、portable extinguishersC、dry foam extinguishersD、CO2 extinguishers
CO2 and Halon extinguishers are used for electrical fire, as well as （）fire.A、commonB、oilC、electricalD、chemical
单选题Fire extinguishers on inspected vessels are numbered by size I through V，with I being（）.Aused for electrical fires onlyBthe smallestCthe most accessibleDthe most effective
单选题Halon fire extinguishers are NOT effective when used on which types of fires?（）AFires in electrical equipmentBFlammable oils and greasesCClass A fires in ordinary combustiblesDMaterials containing their own oxygen
单选题There are two disadvantages to CO2 pump as a firefighting agent. One of these is the limited quantity available，and the other is（）.Athe lack of cooling effect on heated materialsBthat it cannot be used in a dead ship situation with no electrical power to the CO2 pumpCthat it breaks down under extreme heat to form poisonous gasesDthere is no effect on a class A fire even in an enclosed space
单选题The principal personnel hazard unique to Halon extinguishers is（）.Adisplacement of oxygenBskin irritationCinhaling toxic vaporsDeye irritation
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Fire extinguishers of sizes III，IV，and V are designated as（）.AportableBsemi-portableCfixedDdisposable
单选题Which characteristic of Halon is a disadvantage when it is used as a fire extinguishing medium?（）ALeaves a residueBCost，relative to other agentsCBreaks down while under prolonged storageDConducts electricity
单选题Fire extinguishers used on ship’s are numbered by size I through V，with I being（）.Aused for electrical fires onlyBthe smallestCthe most accessibleDthe most effective
单选题When fighting an electrical fire, you should first （）.Astop ventilation to the areaBstop the vesselCsecure electricity to the circuitDapply CO2 to the fire
单选题Which of the following statements is true concerning Halon 1301 fire extinguishing equipment?（）AThe agent is considered nontoxic at room temperature in low concentrationsBThe agent is less effective than carbon dioxideCHalon primarily extinguishes the fire by coolingDThe agent cannot be used on electrical fires because it leaves a residue
单选题Which of the listed fire extinguishers is recommended for use on an electrical switchboard fire?（）ACO2BABC dry chemicalCCO2 propelled foamDAll of the above
单选题Which types of portable fire extinguishers are designed for use on electrical fires?（）ADry chemical and carbon dioxideBFoam (stored pressure) and soda-acidCCarbon dioxide and foam (stored pressure)DDry chemical and soda-acid
单选题Halon extinguishers used on a class C fire should be directed at the（）.Abase of the equipmentBtop of the equipmentCpower sourceDsource of the fire
单选题Halon extinguishes fire primarily by（）.AcoolingBsmotheringCshielding of radiant heatDbreaking the chain reaction
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Due to the hazards involved with Halon extinguishers on a ship，the size II extinguisher may only be used（）.AoutsideBon class C firesCin an emergencyDon class B fires
单选题Your vessel is equipped with a fixed CO2 system and a fire main system. In the event of an electrical fire in the engine room what is the correct procedure for fighting the fire?（）AUse the CO2 system and evacuate the engine roomBUse the fire main system and evacuate the engine roomCEvacuate the engine room and use the CO2 systemDEvacuate the engine room and use the fire main system
单选题Portable CO2 fire extinguishers should NOT be used to inert a space containing flammable liquids due to the danger of（）.Athe CO2 being inhaled by personnelBreflash of burning liquidsCvapor condensation on the extinguisherDthe discharge causing a static spark
单选题Dry chemical fire extinguishers are effective on which type(s) of fire?（）ABurning oilBElectricalCPaintDAll of the above