When the alarm bell sounds on a self-contained, demand-type breathing device, how long will reserve air supply last?
A
About 4-5 minutes
B
About 8-10 minutes
C
About 12-15 minutes
D
About 18-20 minutes
E
İlgili Sorular
The Coast Guard emergency radiotelephone frequency is ______.An inflatable life raft is thrown into the water from a sinking vessel. What occurs automatically af...Which position includes the effects of wind and current?BOTH INTERNATIONAL & INLAND Two vessels meeting in a "head-on" situation are directed by the Rules t...The DEEP DRILLER as currently configured is limited to a maximum water depth of __________.