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【Daily Question】Chemical Analysis Version, 2019.7.3

2019-07-03View Original

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This post was last edited by zjp on 2019-7-3 08:38. Multiple-choice question: If an electrical appliance or instrument catches fire, it is not advisable to use ( ) to put out the fire. A. 1211 fire extinguisher B. Foam fire extinguisher C. Carbon dioxide fire extinguisher D. Dry powder fire extinguisher B

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