Engine : Expired / Engineering Safety - 58/275
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| You are about to enter a compartment to investigate a suspected smoldering fire. If you're not wearing an self-contained breathing apparatus, you should test the compartment's atmosphere to determine if there is/are __________. |
| A) a toxic atmosphere in the compartment |
| B) an explosive mixture in the compartment |
| C) sufficient oxygen to sustain human life |
| D) all of the above |
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