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["["工艺工程大区-Druckrohrelement

2019-02-13View Original

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【工艺工程大区-管道阀门技术交流版-每日一题-第02-13题】 逆止阀是用来防止介质( )的安全装置.当介质倒流时,阀瓣能 ( )关闭。 参考答案:倒流;自动。

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