怎样判断是先熄灭酒精灯还是先撤出导气管
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![怎样判断是先熄灭酒精灯还是先撤出导气管](/uploads/image/z/6577416-0-6.jpg?t=%E6%80%8E%E6%A0%B7%E5%88%A4%E6%96%AD%E6%98%AF%E5%85%88%E7%86%84%E7%81%AD%E9%85%92%E7%B2%BE%E7%81%AF%E8%BF%98%E6%98%AF%E5%85%88%E6%92%A4%E5%87%BA%E5%AF%BC%E6%B0%94%E7%AE%A1)
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