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Types of oxygen masks | eHow UK - eHow UK | How to Videos, Articles & More - Discover the expert
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日期：2025-05-20
Types of oxygen masks. An oxygen mask is used to aid in delivering oxygen into the lungs. Oxygen masks are usually made of plastic, silicone or rubber and come in two basic designs. An oxygen mask that covers the nose and mouth is called an oral nasal ......看更多
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