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You will extinguish a fire when you remove （）.
- A、oxygen
- B、carbon dioxide
- C、H2O
- D、H2
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更多 “You will extinguish a fire when you remove （）.A、oxygenB、carbon dioxideC、H2OD、H2” 相关考题
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发生火情时，客人们能用电梯吗?A.Can guests use the stairs when a fire appears?B.Can guests use the elevators when a fire presents?C.Can guests use the lifts when a fire occurs?D.Can guests use the ladders when a fire breaks up?
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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'
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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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A fire breaks out in ＃4 hold and partially damages some of the cargo．In order to extinguish the fire the hold is flooded thus damaging the remaining cargo in that hold．Which of the following is (are) correct？ ______ ① The damage to the cargo by fire is particular average． ② The damage to the cargo by water is general average．A.① onlyB.② onlyC.Both ① and ②D.Neither ① nor ②
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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
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An important step in fighting any electrical fire is to ______.A.stop ventilationB.stop the vesselC.de-energize the circuitD.apply water to extinguish the fire
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Except in rare cases, it is impossible to extinguish a shipboard fire by ______.A.removing the heatB.removing the oxygenC.removing the fuelD.interrupting the chain reaction
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How does foam extinguish an oil fire ?______.A.By cooling the oil below the ignition temperatureB.By removing the fuel souce from the fireC.By excluding the oxygen from the fireD.By increasing the weight of the oil
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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
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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
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单选题An important step in fighting any electrical fire is to（）.A
stop ventilationB
stop the vesselC
de-energize the circuitD
apply water to extinguish the fire
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单选题To extinguish an electrical fire, you should use （）.A
mechanical foamB
chemical foamC
carbon dioxideD
soda acid
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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
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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
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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
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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
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单选题If in doubt as to the true water level when a boiler is being oil-fired, you should （）.A
take no measuresB
extinguish the fire as soon as possibleC
feed water to the boilerD
open the blow down valve
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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
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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
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单选题Except in rare cases，it is impossible to extinguish a shipboard fire by（）.A
removing the heatB
removing the oxygenC
removing the fuelD
interrupting the chain reaction
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单选题The class of fire on which a blanketing effect is essential to extinguish the fire is （）.A
class AB
class BC
class CD
class D
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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
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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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