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有下列(????)情形之一,即屬于“通風系統不完善、不可靠”。

作者:煤礦安全網 2022-06-16 11:56 來源:煤礦安全網 情形 通風系統
題目信息:

  有下列()情形之一,即屬于“通風系統不完善、不可靠”。

  A.礦井總風量不足

  B.主井、回風井同時出煤

  C.沒有備用主要通風機或者兩臺主要通風機能力不匹配

  D.違反規定串聯通風

答案

煤礦安全網(http://www.nanibalconysafetynets.com)

備案號:蘇ICP備12034812號-2

公安備案號:32031102000832

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