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【单选题】

Regular foam can be used on all but which flammable liquid?()

A、Motor gasoline

B、Jet fuel

C、Crude petroleum

D、Alcohol

更多“Regular foam can be used on all but which flammable liquid?()”相关的问题
第1题

A、Foam conducts electricity  B、To be most effective,foam should be directed at the base of the fire  C、Foam is most effective on burning liquids which are flowing  D、Foam can ONLY be used to extinguish class A fires  

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第2题

A、It is MOST effective on very hot oil fires where the temperatures of the liquid exceed 100°C (212°F)  B、Most foams can be used with dry chemicals to attack a fire by two methods  C、Foam is effective on combustible metal fires  D、Foam can be made with seawater or fresh water  

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第3题

A、Water foam  B、Dry chemical powder  C、Water fog  D、Alcohol foam  

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第4题

A、increases the size of foam bubbles formed  B、increases the rate of foam production  C、improves the extinguishing properties of foam  D、gives the nozzleman more freedom of movement,since it can be placed anywhere in the hose line  

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第5题

A、Foam should not be used on electrical fires  B、One kilo of low expansion foam solution produces much more foam  C、Foam is only efficient when it covers the top of burning combustibles  D、A stream of foam should be deflected off the deck in order to best agitate the fire  

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第6题

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  

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第7题

A、foam  B、CO2  C、low velocity water fog  D、high velocity water fog  

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第8题

A、dry chemical  B、foam  C、high-velocity fog  D、Water (cartridge-operated)  

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第9题

A、A.dry chemical  B、B.foam  C、C.high-velocity fog  D、D.water  

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