Which of the following BEST describes deluge sprinkler systems?
A) Use extinguishing agent other than water for use in specific occupancies
B) Contain air or nitrogen under pressure, air escapes when sprinkler system is initiated
C) Contain water under pressure, two gauges read pressure above and below activation valve
D) Designed with open-head sprinklers to quickly supply a large volume of water to the protected area
Correct Answer:
Verified
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