______, 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

题目

______, as the chemical extinguisher agent, should be used for an electric fire.

A.dry chemical or foam

B.foam or soda acid

C.carbon dioxide or foam

D.carbon dioxide or dry chemical

相似考题

1.What type of extinguisher should be used for an electric fire? ________A.CO2B.FormC.WaterD.Water and Form

2.Which statement concerning the application of dry chemical powder is FALSE ________．A.At temperatures of less than 32℉，the extinguisher must be recharged more oftenB.When possible，the fire should be attacked from windwardC.The stream should be directed at the base of the fireD.Directing the stream into burning flammable liquid may cause splashing

3.A portable dry chemical fire extinguisher discharges by ______.A.gravity when the extinguisher is turned upside downB.pressure from a small CO2 cartridge on the extinguisherC.air pressure from the hand pump attached to the extinguisherD.pressure from the reaction when water is mixed with the chemical

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 the chemical extinguisher agent, should be used for an electric fire.A.dry chem ”相关问题

  • 第1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2题：

    The foam extinguisher should be used （）.

    • A、in the end
    • B、upside down
    • C、down side
    • D、on top

    正确答案:B

  • 第3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4题：

    单选题
    On a bulk chemical carrier，water should NOT be used as an extinguishing agent to fight a fire if the water may come into contact with the chemical called（）.
    A

    acrylic acid

    B

    benzene

    C

    oleum

    D

    vinyl toluene


    正确答案： C
    解析： 暂无解析

  • 第5题：

    单选题
    Tools with （）handles should be used to check electric circuit.
    A

    plastic

    B

    metal

    C

    stainless steel

    D

    copper


    正确答案： A
    解析： 暂无解析

  • 第6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7题：

    单选题
    Which fire extinguishing agent can NOT be used on an ethylenediamine?（）
    A

    Water foam

    B

    Dry chemical powder

    C

    Water fog

    D

    Alcohol foam


    正确答案： B
    解析： 暂无解析

  • 第8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9题：

    单选题
    What type of electric motor is most commonly used on board ship?（）
    A

    non-synchronous electric motor

    B

    synchronous electric motor

    C

    fully enclosed electric motor

    D

    watertight electric motor


    正确答案： C
    解析： 暂无解析

  • 第10题：

    单选题
    Recharging a previously used cartridge-operated dry-chemical extinguisher is accomplished by（）.
    A

    authorized fire equipment servicing personnel only

    B

    replacing the propellent cartridge and refilling with powder

    C

    puncturing the cartridge seal after installation

    D

    recharging the cartridge and refilling it with powder


    正确答案： A
    解析： 暂无解析

  • 第11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12题：

    单选题
    The foam extinguisher should be used （）.
    A

    in the end

    B

    upside down

    C

    down side

    D

    on top


    正确答案： B
    解析： 暂无解析

  • 第13题：

    This fire extinguisher is to be used only in case of（）.

    Aurgency

    Bemergency

    Cimmediacy

    Dcrisis


    B
    略

  • 第14题：

    化学杂交剂（Chemical Hybridizing Agent，CHA）


    正确答案: 利用植物生长调节剂（化学药剂）诱导小麦雄性不育配制杂种一代种子技术，其所用植物生长调节剂称化学杂交剂（CHA.，又称化学杀雄剂。

  • 第15题：

    单选题
    This fire extinguisher is to be used only in case of（）
    A

    urgency

    B

    crisis

    C

    immediacy

    D

    emergency


    正确答案： A
    解析： 暂无解析

  • 第16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17题：

    单选题
    A fire extinguisher is used for （）fires.
    A

    stopping

    B

    putting out

    C

    putting

    D

    finishing


    正确答案： B
    解析： 暂无解析

  • 第18题：

    单选题
    Which portable fire extinguisher should be used on a class C fire on board a vessel?（）
    A

    Carbon dioxide

    B

    Water (stored pressure)

    C

    Foam

    D

    Carbon tetrachloride


    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
    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21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22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23题：

    名词解释题
    化学杂交剂（Chemical Hybridizing Agent，CHA）

    正确答案： 利用植物生长调节剂（化学药剂）诱导小麦雄性不育配制杂种一代种子技术，其所用植物生长调节剂称化学杂交剂（CHA.，又称化学杀雄剂。
    解析： 暂无解析

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