Portable Fire Extinguishers
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| At what stage of fire growth are portable fire extinguishers primary designed to function? | Incipient stage
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| Which class of fires involves ordinary combustibles such as wood, paper, cloth and rubber? | Class A
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| Which class of fires involves flammable liquids such as gasoline, oil, grease, tar, and oil-based paints? | Class B
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| What is the standard shape used to identify a portable fire extinguisher used for flammable liquid fires? | Red square
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| Which of the following extinguishing agents is combined with alkali metal salt in a loaded-stream fire extinguisher to combat freezing of the agent? | Water
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| Which of the following extinguishing agents is used for class B and C fires and is not subject to freezing? | Dry chemical
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| What class of foam concentrate extinguisher discharges a foam solution that floats across the surface of a burning liquid? | Class B foam
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| Which of the following agents is formulated from finely ground sodium chloride and forms a solid crust over the material on fire? | Dry powder
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| What is the acronym for activating the fire extinguisher in order to apply the extinguishing agent in four simple steps? | PASS
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| Which type of fire extinguisher requires hydrostatic testing every 12 years? | Halogenated agent
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