Multiple-choice Questions – Dry Gas Recovery and Wastewater Stripping Version: One Question per Day, 4/29

2018-04-30View Original

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This post was last edited by Green Lotus on 2018-4-30 at 16:31. Under what circumstances can a filtering gas mask be used in the event of a toxic gas leak? ( ) A. When the volume concentration of oxygen in the air is higher than 18% B. In relatively enclosed spaces such as mines, long tunnels, and basements C. When there is a leakage of high-concentration gases. Answer: A

Reply #22018-04-30

When the volume concentration of oxygen in air is higher than 18%

Reply #32018-04-30

When the volume concentration of oxygen in air is higher than 18%

Reply #42018-04-30

When the volume concentration of oxygen in air is higher than 18%

Reply #52018-04-30

When the volume concentration of oxygen in air is higher than 18%

Reply #62018-04-30

When the volume concentration of oxygen in air is higher than 18%

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