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【单项选择题】

Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to().

A、A.flashing point

B、B.combustion point

C、C.auto-ignition point

D、D.lower explosive limit

更多“Carbon dioxide flooding system is used for extinguishing fires because it reduces the concentration of oxygen in the air to().”相关的问题
第1题

A、aldehydes and carbon dioxide  B、water vapor and carbon monoxide  C、nitrogen and carbon monoxide  D、water vapor and carbon dioxide  

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第2题

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  

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第3题

A、dry chemical or foam  B、foam or soda acid  C、carbon dioxide or foam  D、carbon dioxide or dry chemical  

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第4题

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  

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第5题

A、foam or soda acid  B、dry chemical or foam  C、carbon dioxide or dry chemical  D、carbon dioxide or foam  

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第6题

A、Dry chemical or foam  B、Foam or soda acid  C、carbon dioxide or foam  D、carbon dioxide or dry chemical  

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第7题

A、foam or soda acid  B、dry chemical or foam  C、carbon dioxide or dry chemical  D、carbon dioxide or foam  

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第8题

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  

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