Oxygen balloon:
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Suction action of air
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Blower, air broom
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Helium balloon
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The work of oxygen equipment, the release of
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Air is bleeding through a hose
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Air pressure
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Air compressor operation
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Air is let through the regulator
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Fighting the fire with blacksmith furs
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Balloon inflating
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Mask breathing
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Small compressor blowing air
★★★★★