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You will extinguish a fire when you remove （）.
- A、oxygen
- B、carbon dioxide
- C、H2O
- D、H2
参考答案
更多 “You will extinguish a fire when you remove （）.A、oxygenB、carbon dioxideC、H2OD、H2” 相关考题
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In a diesel engine, when refitting piston rings you should ①check the ring gap at the smallest diameter of the cylinder ②remove carbon from the ring grooveA.①B.②C.①②D.neither ① nor ②
考题
One of the disadvantages of using carbon dioxide to extinguish a fire in an enclosed space isA.the 'snow' which is sometimes discharged along with the gas is toxicB.prolonged exposure to high concentrations of CO2 gas causes suffocationC.rapid dissipation of the CO2 vaporD.the CO2 gas is lighter than air and a large amount is required to extinguish a fire near the deck
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Which of the listed fire extinguishers cannot be easily recharged aboard ship?A.Soda acidB.Carbon dioxideC.Dry chemicalD.cartridge-operated Foam
考题
In a diesel engine, when refitting piston rings you should______. I. check the ring gap at the smallest diameter of the cylinder II. remove carbon from the ring grooveA.I onlyB.II onlyC.both I and IID.neither I nor II
考题
To prevent the spread of fire by conduction, you should ______.A.cool the bulkheads around the fireB.remove combustibles from direct exposureC.close all openings to the areaD.shut off all electric power
考题
A fire starts on your vessel while refueling. You should FIRST ______.A.stop the ventilationB.sound the general alarmC.determine the source of the fireD.attempt to extinguish the fire
考题
You install Windows 2000 Professional on your portable computer. You install an SCSI and PC card adapter, that you can use in the office to use color scanner. You use a docking station for your computer when you are in the office. You want to maximize the battery performance for your portable computer. You also want to prevent the driver from loading whenever you are away from the office. What should you do?（）A、When away from the office use Device Manager to remove the adapter. B、When away from the office configure the startup properties for the adapter to be automatic. C、Remove the computer from the docking station and start Windows 2000 Professional to disable the SCSI PC card adapter device for the current profile.D、Remove the computer from the docking station and start Windows 2000 Professional, use Device Manager to remove SCSI PC card adapter device.
考题
单选题When fuel oil has seriously contaminated a diesel engine lubricating oil, you should （）.A
filter to remove the fuel oilB
use the settler to remove the fuel oilC
remove the fuel oil by centrifugingD
drain and then renew the lube oil supply
考题
单选题To extinguish an electrical fire, you should use （）.A
mechanical foamB
chemical foamC
carbon dioxideD
soda acid
考题
单选题When you hear three short blasts on the ships whistle and the same signal on the general alarm bells, you （）.A
are required to go to your life-raftB
are dismissed from drillsC
should point to the man overboardD
should start the fire pump
考题
单选题In a diesel engine, when refitting piston rings you should （） Ⅰ.check the ring gap at the smallest diameter of the cylinder Ⅱ. Remove carbon from the ring grooveA
Ⅰ onlyB
Ⅱ onlyC
both Ⅰ and ⅡD
neither Ⅰ nor Ⅱ
考题
单选题The four basic components of a fire are fuel, heat, oxygen and a chain reactionWhich of the following statements best describes what must be eliminated to extinguish a fire?（）A
Any one component can be eliminated to extinguish a fireB
Any two components must be eliminated to properly extinguish a fireC
Any three components must be eliminated to properly extinguish a fireD
Ali four components must be eliminated to extinguish any fire
考题
单选题When approaching a fire from win ward, you should shield firefighters from the fire by using（）A
low-velocity fogB
high-velocity fogC
a straight stream of waterD
foam spray
考题
单选题A fire starts on your vessel while refueling. You should FIRST（）.A
stop the ventilationB
sound the general alarmC
determine the source of the fireD
attempt to extinguish the fire
考题
单选题A fire starts on you vessel while refueling. You should first（）.A
stop the ventilationB
sound the general alarmC
determine the source of the fireD
attempt to extinguish the fire
考题
单选题An advantage of a dry chemical over a carbon dioxide fire extinguish is its（）.A
greater rangeB
effective on all types of firesC
cleanlinessD
All of the above
考题
单选题It is necessary to secure the forced ventilation to a compartment where there is a fire to（）.A
allow the exhaust fans to remove smokeB
extinguish the fire by carbon monoxide smotheringC
prevent additional oxygen from reaching the fireD
protect fire fighting personnel from smoke
考题
单选题When fighting an electrical fire, you should first （）.A
stop ventilation to the areaB
stop the vesselC
secure electricity to the circuitD
apply CO2 to the fire
考题
单选题To lubricate the swivel or remove corrosion from a fire hose coupling，you should use（）.A
glycerineB
graphiteC
keroseneD
fresh water and soap
考题
单选题When required to work where there may be explosive gases, you should use tools which are （）A
approved by the Coast GuardB
high carbon steelC
fixed with a ferrous coverD
nonsparking
考题
单选题Why should you wear a self-contained breathing apparatus before entering the engine room after the fixed CO2 system has been discharged to combat a major fire?（）A
Because carbon dioxide dilutes the oxygen concentration in the atmosphere and may cause asphyxiationB
Because carbon dioxide breaks down in a fire into carbon monoxide which may cause blood poisoning in the person breathing this gasC
Because carbon dioxide is a colorless and odorless gas that becomes highly toxic in the presence of high temperatures and will quickly incapacitate a person exposed to this gasD
This action is unnecessary as carbon dioxide is not poisonous nor toxic but is a relatively harmless gas
考题
单选题When fighting a spreading fire resulting from a broken fuel line, you should FIRST （）.A
look for a CO2 extinguisherB
use a soda acid extinguisherC
shut off the fuel supplyD
smother the fire with rags
考题
单选题When a fire happens, _____ if you open the hot door.A
the fire will grow more quicklyB
the electricity will be cut offC
the door will soon be on fireD
the house will fall down
考题
单选题When fighting fires in spaces containing bottles of LPG (liquefied petroleum gas)，you should （）.A
attempt to isolate the fire from the LPGB
cool the bottles or remove them from the fire areaC
see that the valves on all LPG bottles are closedD
place insulating material over the bottles
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