After putting on a self-contained breathing apparatus, you open the air supply and hear a continuous ringing of a bell. What does this mean?
A
The unit is working properly.
B
The face mask is not sealed properly.
C
The air bottle needs to be refilled.
D
The air supply hose has a leak.
E
İlgili Sorular
Which statement is FALSE?A CO2 extinguisher on a MODU which has lost 10% of its charge must be ____________.You are going astern (single-screw, right-handed propeller) with the anchor down at a scope of twice...INTERNATIONAL ONLY Which vessel is to keep out of the way of the others?BOTH INTERNATIONAL & INLAND A sailing vessel underway at night may show __________.