The self-contained breathing device should not be used in which situation().
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?().
Wear the breathing apparatus before entering an enclosed space.()
The function of the bypass valve on the self-contained breathing apparatus is to().
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?().
When administering artificial respiration to an adult, the breathing cycle should be repeated about ()
When administering artificial respiration to an adult, the breathing cycle should be repeated about ()
When entering a foam injected space () breathing apparatus.
A self-contained breathing apparatus is used to().
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? ()