[KongchangAI]
Unverified50% confidenceDecision RuleTime unknown

急救面罩必须配备单向阀(one-way valve)+ 过滤膜双重结构,单向阀防止施救者接触被救者呼出气体、呕吐物或血液,缺一不可用于CPR人工呼吸

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