As compared to carbon dioxide, dry chemical has which advantage? ______.A.CleanerB.Effective on metal firesC.Greater rangeD.More cooling effect

题目

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

A.Cleaner

B.Effective on metal fires

C.Greater range

D.More cooling effect

相似考题

1.Of all the extingushing agents listed below, which one has the greatest capacity for heat absorption?______.A.Water fogB.Carbon dioxideC.Dry chemicalD.Solid stream of water

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.An advantage of a dry chemical over a carbon dioxide fire extinguisher is its ______.A.greater rangeB.effectiveness on all types of firesC.cleanlinessD.All of the above

4.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

更多“As compared to carbon dioxide, dry chemical has which advantage? ______.A.CleanerB.Effecti ”相关问题

  • 第1题：

    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


    正确答案：B
    ABC干粉灭火器较二氧化碳灭火器时一个多功能灭火器。

  • 第2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3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4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5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6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7题：

    单选题
    According to the Chemical Data Guide，when burning，the grade B flammable liquid，carbon disulfide produces（）.
    A

    phosgene gas

    B

    sulfuric acid gas

    C

    sulfur dioxide gas

    D

    carbon tetrachloride


    正确答案： A
    解析： 暂无解析

  • 第8题：

    单选题
    Which of the following statements is true concerning carbon dioxide when used as a fire extinguishing agent?（）
    A

    Carbon dioxide is corrosive when exposed to fire

    B

    Carbon dioxide should be applied slowly to a large engine room fire

    C

    Its total cooling effect is far greater than water

    D

    Its smothering effect is excellent for class B fires


    正确答案： A
    解析： 暂无解析

  • 第9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10题：

    单选题
    A life raft which has inflated bottom-up on the water（）.
    A

    should be righted by standing on the carbon dioxide cylinder, holding the righting straps, and leaning backwards

    B

    should be righted by standing on the life line, holding the righting straps, and leaning backwards

    C

    will right itself when the canopy tubes inflate

    D

    must be cleared of the buoyant equipment before it will right itself


    正确答案： C
    解析： 暂无解析

  • 第11题：

    单选题
    On a ship，a fixed carbon dioxide or other approved system must be installed（）.
    A

    where oil or chemical drums are stored

    B

    in all battery storage locations

    C

    in paint lockers

    D

    in all of the above locations


    正确答案： D
    解析： 暂无解析

  • 第12题：

    单选题
    A liferaft which has inflated bottom-up on the water（）.
    A

    should be righted by standing on the carbon dioxide cylinder，holding the righting straps，and leaning backwards

    B

    should be righted by standing on the life line，holding the righting straps，and leaning backwards

    C

    will right itself when the canopy tubes inflate

    D

    must be cleared of the buoyant equipment before it will right itself


    正确答案： A
    解析： 暂无解析

  • 第13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14题：

    单选题
    Which extinguishing agent is recommended in the Chemical Data Guide for use on a carbon disulfide fire?（）
    A

    Alcohol foam

    B

    Dry chemical

    C

    Chemical foam

    D

    Water fog


    正确答案： C
    解析： 暂无解析

  • 第15题：

    单选题
    According to the passage, which of the following is true of the last hundred years?
    A

    Fossil fuels were burned for the first time.

    B

    Greater amounts of land were cleared than at any time before.

    C

    The average temperature at the Earth’s surface has become 2℃ cooler.

    D

    The amount of carbon dioxide in the atmosphere has increased measurably.


    正确答案： A
    解析：
    文中第二段第二句表明，过去100年间，矿物燃料的燃烧和森林的砍伐使大气中二氧化碳的含量增加了大约15%，而且我们不断地向大气中排放二氧化碳，由此可以推断，A、B两项表述均不准确；由于大气中的二氧化碳在不断增加，因此地表温度只会升高，而不是降低，C项错误；因此只有D项符合文章大意。

  • 第16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17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18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19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20题：

    单选题
    Which types of portable fire extinguishers are designed for use on electrical fires?（）
    A

    Dry chemical and carbon dioxide

    B

    Foam (stored pressure) and soda-acid

    C

    Carbon dioxide and foam (stored pressure)

    D

    Dry chemical and soda-acid


    正确答案： D
    解析： 暂无解析

  • 第21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22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 asphyxiation

    B

    Because carbon dioxide breaks down in a fire into carbon monoxide which may cause blood poisoning in the person breathing this gas

    C

    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 gas

    D

    This action is unnecessary as carbon dioxide is not poisonous nor toxic but is a relatively harmless gas


    正确答案： C
    解析： 暂无解析

  • 第23题：

    单选题
    Dry chemical fire extinguishers are effective on which type(s) of fire?（）
    A

    Burning oil

    B

    Electrical

    C

    Paint

    D

    All of the above


    正确答案： A
    解析： 暂无解析

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