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问题详情

下列抽放设备中，可作为测量用具的是_______。

A、放水器

B、瓦斯泵

C、孔板流量计

D、防回火网

时间：2021-09-01 22:49 关键词：联大河南理工大学矿井通风与安全课程设计

答案解析

C

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