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判斷題

一般稱閃點(diǎn)小于或等于45℃的液體為可燃液體，閃點(diǎn)大于45℃的液體為易燃液體.

答案：錯(cuò)誤

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負(fù)壓操作可以防止系統(tǒng)中的有毒爆炸性氣體向外逸散.

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