You are about to enter a compartment to investigate a suspected smoldering fireIf youre no

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You are about to enter a compartment to investigate a suspected smoldering fireIf youre not wearing a self-contained breathing apparatus, you should test the compartments atmosphere to determine if there is/are _____.

A.sufficient oxygen to sustain human life

B.an explosive mixture in the compartment

C.a toxic atmosphere in the compartment

D.All of the above

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