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個別井下機電硐室,經礦總工程師批準,可設在回風流中,但進入機電硐室的風流瓦斯濃度不得超過(????)%,并必須安裝瓦斯自動檢測報警斷電裝置。

作者:煤礦安全網 2022-06-13 13:58 來源:煤礦安全網 機電 硐室 總工程師 風流 瓦斯 濃度 裝置
題目信息:

  個別井下機電硐室,經礦總工程師批準,可設在回風流中,但進入機電硐室的風流瓦斯濃度不得超過()%,并必須安裝瓦斯自動檢測報警斷電裝置。

  A.0.5

  B.1

  C.1.5

答案

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