Dry chemical fire extinguishers are effective on which type(s) of fire?（）

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• An advantage of a dry chemical over a carbon dioxide fire extinguisher is its（）.

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• Which action is routinely performed at the annual servicing and inspection of a dry-chemical cartridge-operated portable fire extinguisher?（）

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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.

  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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• 香槟酒中（）为每升12－20克的属于Extra Dry。

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• An advantage of a dry chemical over a carbon dioxide fire extinguish is its（）.

  A . greater range B . effective on all types of fires C . cleanliness D . All of the above

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• As compared to carbon dioxide,dry chemical has which advantage?（）.

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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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