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["일일 문제, 정답은 없지만 재미있게 참여해보세요\n施工现场有煤油、汽油等物品着火时要用()灭火。A、水B、泡沫灭火剂C、水和泡沫灭火剂 昨日问题:A\n机械密封动环密封面有一定的端面跳动,将造成(A)现象。A、泄漏B、烧轴 前日问题:B"]

2019-11-14View Original

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12.施工现场浸有煤油、汽油等物体燃烧时,要用()灭火。?A、水B、泡沫灭火剂C、水和泡沫灭火剂 昨天一题答案:A 11.机械密封动环密封面有一定的端面跳动,将造成(A)现象。 A、泄漏B、烧轴 前天一题答案:B

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