Dry chemical extinguishers extinguish class B fires to the greatest extent by().
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An advantage of an ABC dry chemical over a carbon dioxide extinguisher is().
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(),as the chemical extinguisher agent,should be used for an electric fire.
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An advantage of a dry chemical over a carbon dioxide fire extinguish is its().
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As compared to carbon dioxide,dry chemical has which advantage?().
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An “ABC” dry chemical fire extinguisher would be LEAST effective against a fire in().
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Dry Martini鸡尾酒以( )为装饰物。
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DRY-FIT整在我部现时所用的柔软剂名称为()
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