681. "what is the minimum requirement for carbon di oxide gas to be released to fight afire in the engine room?"

A. 50% of carbon dioxide to be discharged within 2 minutes.
B. 100% of carbon dioxide to be discharged within 10 minutes.
C. 75% of carbon dioxide to be discharged within 5 minutes.
D. 85% of carbon di oxide to be discharged within 2 minutes