The work of oxygen equipment, the release of oxygen: Listen & Download The work of oxygen equipment, the release of .mp3 Error! Change your browser, please! ⇓ Download Blower, air broom ⚠ Air is bleeding through a hose ⚠ Truck Air Brakes ⚠ Mask breathing ⚠ Wind tunnel ventilation ⚠ Balloon descent ⚠ Oxygen balloon ⚠ Rope torsion ⚠ Air pressure ⚠ A stream of air breaks out of a metal pipe ⚠ Air is blown through a glass tube ⚠ Helium balloon ⚠ ★★★★★