A. 60%-80% B. 20%-40% C. 30%-50% D. 90%-100% « Previous Next »
Home DG Shipping exit exam 710. Fixed gas detection system alarms should be activated when the vapour concentration reaches _________ % of the lower flammable limit? A. 60%-80% B. 20%-40% C. 30%-50% D. 90%-100% « Previous Next »
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