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Español Translations » 历史存档[信息] » 【Pregunta diaria】 2016 07 18 Sector de hidrogenación Pregunt

【Pregunta diaria】 2016 07 18 Sector de hidrogenación Preguntas de selección

2016-07-18View Original

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【Pregunta diaria】 18/07/2016. Sector de hidrogenación. Pregunta de selección: Durante el cierre del sistema de hidrogenación, ¿qué se debe utilizar para reemplazar el hidrógeno? A. Aire B. Nitrógeno C. Vapor de agua D. Hidrógeno. Respuesta: B
Reply #22016-07-18
Durante el cierre del sistema de hidrogenación, es necesario utilizar (B. nitrógeno) para su sustitución

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Translated at 2026-07-28 02:47:45

Original: https://bbs.hcbbs.com/thread-1602693-1-1.html

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