4. Which type of fire extinguisher is typically made of sodium bicarbonate or potassium
bicarbonate?
(A) AFFF foam type fire extinguisher
(B) Water type fire extinguisher
(C) Dry chemical foam type fire extinguisher
(D) Vaporizing liquids type fire extinguisher
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哪種類型的滅火器通常由碳酸氫鈉或碳酸氫鉀...
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