A coolant is desirable component in the design of a self- contained breathing apparatus since
A. Surroundings can be hot and humid during rescue
B. A rescue worker generates large amount of metabolic heat
C. Exhaled air CO2 aboprtion is an exothermic reaction
D. Exhaled air water vapour has been condensed
Answer: Option A
This Question Belongs to Mining Engineering >> Mine Ventilation
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