Chains, Ropes, and Slings Test I
Source: Questions and answers from the National Safety Council


Progress Indicator:
Question 6 of 20

6.  My Mine Rescue closed circuit breathing apparatus does NOT use air in the cylinder because:

Choices:
  1. Air does not have any oxygen
  2. Air has too much CO2
  3. The manufacturer specifies oxygen and air does NOT have enough oxygen
  4. Air tastes bad


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