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

题目

How does foam extinguish an oil fire ?______.

A.By cooling the oil below the ignition temperature

B.By removing the fuel souce from the fire

C.By excluding the oxygen from the fire

D.By increasing the weight of the oil

相似考题

1.Oil fires are best extinguished by ______.A.cutting off the supply of oxygenB.removing the fuelC.cooling below the ignition temperatureD.spraying with water

2.In the event of a small bunker oil spill on deck occurring while bunkering, you should ____.A.wash down the area immediately with a fire hoseB.wash down the area with keroseneC.cover the area with absorbent materialD.cover the area with foam

3.A fire of escaping liquefied flammable gas is best extinguished by ______.A.cooling the gas below the ignition pointB.cutting off the supply of oxygenC.stopping the flow of gasD.interrupting the chain reaction

4.One of the limitations of foam as an extinguishing agent is that foam ______.A.cannot be made with salt waterB.is heavier than oil and sinks below its surfaceC.is corrosive and a hazard to fire fightersD.conducts electricity

更多“How does foam extinguish an oil fire ?______.A.By cooling the oil below the ignition tempe ”相关问题

  • 第1题：

    A foam-type portable fire extinguisher is most useful in fighting a fire in ______.

    A.generators

    B.oil drums

    C.the bridge controls

    D.combustible metals


    正确答案：B
    便携式泡沫灭火器对扑灭油桶着火最有效。

  • 第2题：

    As an extinguishing agent, foam ______.

    A.conducts electricity

    B.should be directed at the base of the fire

    C.is most efffective on buring gases which are flowing

    D.extinguishes by cooling oil fires below ignition temperature


    正确答案：A
    对于灭火剂，泡沫灭火剂导电。

  • 第3题：

    Never extinguish oil and electrical fires with （）.

    • A、water
    • B、foam extinguisher
    • C、CO2 extinguisher
    • D、portable extinguisher

    正确答案:A

  • 第4题：

    单选题
    0il fires are best extinguish by（）.
    A

    cutting off supply of oxygen

    B

    removing the fuel

    C

    cooling below the ignition temperature

    D

    spraying with water


    正确答案： A
    解析： 暂无解析

  • 第5题：

    单选题
    What is an advantage of using foam in fire fighting?（）
    A

    It is effective in controlling fire in flowing oil such as coming from a broken fuel line

    B

    It absorbs heat from materials that could cause reignition

    C

    Most foams can be used jointly with dry chemical extinguishing agents to attack a fire by two methods of extinguishment

    D

    Once the surface is blanketed with foam and the fire is extinguished，no further foam is required


    正确答案： B
    解析： 暂无解析

  • 第6题：

    单选题
    As an extinguishing agent，foam（）.
    A

    conducts electricity

    B

    should be directed at the base of the fire

    C

    is most effective on burning gases which are flowing

    D

    extinguishes by cooling oil fires below ignition temperature


    正确答案： C
    解析： 暂无解析

  • 第7题：

    单选题
    The best method of extinguishing a class A fire is to（）.
    A

    remove oxygen from the area

    B

    cool fuel below ignition temperature

    C

    smother with CO2

    D

    smother fire with foam


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    Which of the following statements is true concerning an oil cooler?（）
    A

    The oil temperature is less than the cooling water temperature

    B

    The oil pressure is less than the cooling water pressure

    C

    The oil pressure is greater than the cooling water pressure

    D

    The oil flow control valve is always installed in the oil input line


    正确答案： C
    解析： 暂无解析

  • 第9题：

    单选题
    When an oil fire has been extinguished, the surface of the oil should be kept covered with foam to prevent （）.
    A

    air from contacting the oil vapors

    B

    permitting re-ignition boiling of the heated oil

    C

    spontaneous combustion below the oil surface

    D

    toxic fumes from escaping to the surface


    正确答案： D
    解析： 暂无解析

  • 第10题：

    单选题
    Foam extinguishes a fire by（）.
    A

    shutting off the air supply

    B

    cooling the fuel to below ignition temperature

    C

    dispersing the fuel

    D

    removing the source of ignition


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    0ne of the limitations of foam as an extinguishing agent is that foam（）.
    A

    cannot be made with salt water

    B

    is heavierthan oil and sinks below its surface

    C

    is corrosive and to fire fighters

    D

    conducts electricity


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    When used to fight fire，carbon dioxide（）.
    A

    is effective if used promptly on an oil fire

    B

    has a greater cooling effect than water

    C

    is lighter than air

    D

    is harmless to cargo and crew


    正确答案： A
    解析： 暂无解析

  • 第13题：

    A portable foam (stored-pressure type) fire extinguisher would be most useful in combating a fire in ______.

    A.generators

    B.oil drums

    C.the bridge controls

    D.combustible metals


    正确答案：B
    便携式泡沫储备气压式灭火器最适宜扑灭油桶火。

  • 第14题：

    Foam extinguishes a fire by ______.

    A.shutting off the air supply

    B.cooling the fuel to below ignition temperature

    C.dispersing the fuel

    D.removing the source of ignition


    正确答案：A
    泡沫灭火通过切断空气供给。

  • 第15题：

    单选题
    How does foam extinguish an oil fire?（）
    A

    By cooling the oil below the ignition temperature

    B

    By removing the fuel source from the fire

    C

    By excluding the oxygen from the fire

    D

    By increasing the weight of the oil


    正确答案： C
    解析： 暂无解析

  • 第16题：

    单选题
    If the cooling water temperature and the lube oil temperature in a diesel engine are too high, the cause can be （）
    A

    a dirty lube oil strainer

    B

    internal water leaks

    C

    an oil suction line restriction

    D

    excessive wears of the cooling water pump


    正确答案： B
    解析： 暂无解析

  • 第17题：

    单选题
    The FIRST course of action in fighting a fire in a cargo or fuel oil tank is to （）.
    A

    secure all openings to the tank

    B

    discharge an initial charge of CO2 with a hand portable extinguisher

    C

    direct a fire hose into the tank and energize the fire main

    D

    spray the tank boundaries with a fire hose to promote cooling


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    As an extinguishing agent,foam（）.
    A

    couducts electricity

    B

    should be directed at the base of the fire

    C

    is most effective on burning gases which are flowing

    D

    extinguishes by cooling oil fires blow ignition temperature


    正确答案： B
    解析： 暂无解析

  • 第19题：

    单选题
    Oil fires are best extinguished by（）.
    A

    cutting off the supply of oxygen

    B

    removing the fuel

    C

    cooling below the ignition temperature

    D

    spraying with water


    正确答案： B
    解析： 暂无解析

  • 第20题：

    单选题
    One result of operating a diesel engine at light load with excessively low cooling water temperature is a/an （）
    A

    decrease in ignition lag

    B

    increase in fuel economy

    C

    reduction in lube oil viscosity

    D

    increase in cylinder misfiring


    正确答案： D
    解析： 暂无解析

  • 第21题：

    单选题
    Lube oil in the fresh water cooling system of a diesel engine may result from a （）
    A

    camshaft seizure

    B

    lube oil pump failure

    C

    lube oil cooler failure

    D

    lube oil pump overflow


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    Shaker, circulation and spray are the three general methods used in（）
    A

    pre-injection fuel oil treatment

    B

    lube oil filtration

    C

    lube oil purification

    D

    piston cooling


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    In the event of a small bunker oil spill on deck occurring while bunkering, you should （）.
    A

    wash down the area immediately with a fire hose

    B

    wash down the area with kerosene

    C

    cover the area with absorbent material

    D

    cover the area with foam


    正确答案： D
    解析： 暂无解析

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