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An advantage of an ABC dry chemical over a carbon dioxide fire extinguisher is ______.A.lack of toxicityB.the multipurpose extinguishing abilityC.burn-back protectionD.cooling ability

题目

An advantage of an ABC dry chemical over a carbon dioxide fire extinguisher is ______.

A.lack of toxicity

B.the multipurpose extinguishing ability

C.burn-back protection

D.cooling ability

相似考题

1.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

2.______, 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

3.A carbon dioxide fire extinguisher should be recharged ______.A.at least annuallyB.whenever it is below its required weightC.only if the extinguisher has been usedD.before every safety inspection

4.The most effective way of applying carbon dioxide from a portable extinguisher to a fire is by ______．A.Forming a cloud cover over the flamesB.Directing the gas at the base of the flames in a slow sweeping motionC.Discharging the carbon dioxide into the heart of the flamesD.Bouncing the discharge off an adjacent bulkhead just above the burning surface

更多“An advantage of an ABC dry chemical over a carbon dioxide fire extinguisher is ______.A.la ”相关问题

  • 第1题：

    A portable dry chemical fire extinguisher discharges by ______.

    A.gravity when the extinguisher is turned upside down

    B.pressure from a small CO2 cartridge on the extinguisher

    C.air pressure from the hand pump attached to the extinguisher

    D.pressure from the reaction when water is mixed with the chemical


    正确答案：B
    便携式干粉灭火器通过灭火器内二氧化碳小气瓶的压力来排放药剂。

  • 第2题：

    An advantage of a dry chemical over a carbon dioxide fire extinguisher is its ______.

    A.greater range

    B.effectiveness on all types of fires

    C.cleanliness

    D.All of the above


    正确答案：A
    干粉灭火器优于CO2灭火器的优点是它更远的作用距离。

  • 第3题：

    An engine compartment gasoline fire requires which type of extinguisher?______.

    A.Carbon dioxide

    B.Dry chemical

    C.Foam

    D.All of the above


    正确答案：D
    机舱油汽火灾要求哪一种灭火器（扑灭）？CO2，干粉，泡沫

  • 第4题：

    单选题
    When must a dry chemical fire extinguisher be recharged?（）
    A

    After each use

    B

    When the air temperature exceeds 90°F

    C

    Every 6 months

    D

    Every 12 months


    正确答案： B
    解析： 暂无解析

  • 第5题：

    单选题
    The discharge from a carbon dioxide fire extinguisher should be directed（）.
    A

    at the base of the flames

    B

    at the center of the flames

    C

    to the lee side of the flames

    D

    over the tops of the flames


    正确答案： A
    解析： 暂无解析

  • 第6题：

    单选题
    Flames from small leaks of LFG may be extinguished by（）.
    A

    utilizing carbon dioxide or dry chemical fire extinguishers

    B

    utilizing soda and acid fire extinguishers

    C

    blowing the flames out

    D

    letting it burn itself out


    正确答案： C
    解析： 暂无解析

  • 第7题：

    单选题
    An advantage of a dry chemical over a carbon dioxide fire extinguish is its（）.
    A

    greater range

    B

    effective on all types of fires

    C

    cleanliness

    D

    All of the above


    正确答案： D
    解析： 暂无解析

  • 第8题：

    单选题
    As compared to carbon dioxide,dry chemical has which advantage?（）.
    A

    Cleaner

    B

    Effective

    C

    Greater range

    D

    More cooling effect


    正确答案： A
    解析： 暂无解析

  • 第9题：

    单选题
    Carbon dioxide as a fire fighting agent has which advantage over other agents?（）.
    A

    It causes minimal damage

    B

    It is safe for personnel

    C

    It is cheaper

    D

    It is most effective on a per unit basis


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?（）
    A

    Insure the chemical is powdery

    B

    Replace the cartridge

    C

    Pressure test the discharge hose

    D

    Test the pressure gauge for proper operation


    正确答案： B
    解析： 暂无解析

  • 第11题：

    单选题
    An ABC dry chemical fire extinguisher would be LEAST effective against a fire in（）.
    A

    a mattress

    B

    spilled liquids such as oil or paint

    C

    high voltage electrical gear

    D

    a trash can


    正确答案： A
    解析： 暂无解析

  • 第12题：

    单选题
    An advantage of a dry chemical over a carbon dioxide fire extinguisher is its（）.
    A

    greater range

    B

    effectiveness on all types of fires

    C

    cleanliness

    D

    All of the above


    正确答案： A
    解析： 暂无解析

  • 第13题：

    An ABC dry chemical fire extinguisher would be LEAST effective against a fire in ______.

    A.a mattress

    B.spilled liquids such as oil or paint

    C.high voltage electrical gear

    D.a trash can


    正确答案：A
    干粉灭火机对席子着火的扑救效果最差。

  • 第14题：

    As compared to carbon dioxide, dry chemical has which advantage? ______.

    A.Cleaner

    B.Effective on metal fires

    C.Greater range

    D.More cooling effect


    正确答案：C
    与CO2相比，干粉灭火器有哪些优点？作用距离更远.

  • 第15题：

    单选题
    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 reading

    B

    Weigh the cartridge

    C

    Replace the dry chemical

    D

    Pressure test the discharge hose


    正确答案： D
    解析： 暂无解析

  • 第16题：

    单选题
    As compared to carbon dioxide，dry chemical has which advantage?（）.
    A

    Cleaner

    B

    Effective on metal fires

    C

    Greater range

    D

    More cooling effect


    正确答案： C
    解析： 暂无解析

  • 第17题：

    单选题
    An advantage of an ABC dry chemical over a carbon dioxide extinguisher is（）.
    A

    lack of toxicity

    B

    the multipurpose extinguishing ability

    C

    burn-back protection

    D

    cooling ability


    正确答案： D
    解析： 暂无解析

  • 第18题：

    单选题
    （）as the chemical extinguisher agent, should be used for a an electric fire.
    A

    Dry chemical or foam

    B

    Foam or soda acid

    C

    carbon dioxide or foam

    D

    carbon dioxide or dry chemical


    正确答案： D
    解析： 暂无解析

  • 第19题：

    单选题
    The type of extinguisher which should be used for an electricity fire is（）.
    A

    foam or soda acid

    B

    dry chemical or foam

    C

    carbon dioxide or dry chemical

    D

    carbon dioxide or foam


    正确答案： A
    解析： 暂无解析

  • 第20题：

    单选题
    A portable dry chemical fire extinguisher discharges by（）.
    A

    gravity when the extinguisher is turned upside down

    B

    pressure from a small CO2 cartridge on the extinguisher

    C

    air pressure from the hand pump attached to the extinguisher

    D

    pressure from the reaction when water is mixed with the chemical


    正确答案： A
    解析： 暂无解析

  • 第21题：

    单选题
    Which types of portable extinguisher should you watch for the reflash of the fire?（）
    A

    foam and water

    B

    CO2 and dry chemical

    C

    dry chemical and water

    D

    foam and CO2


    正确答案： A
    解析： 暂无解析

  • 第22题：

    单选题
    A carbon dioxide fire extinguisher should be recharged（）.
    A

    at least annually

    B

    whenever it is below its required weight

    C

    only if the extinguisher has been used

    D

    before every safety inspection


    正确答案： A
    解析： 暂无解析

  • 第23题：

    单选题
    When fighting a fire with a portable dry chemical fire extinguisher，the stream should be directed（）.
    A

    over the top of the flames

    B

    off a bulkhead into the fire

    C

    in front of the fire

    D

    at the base of the fire


    正确答案： C
    解析： 暂无解析

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