题目内容
单人、双人操作成人胸外按压与人工呼吸的比例分别为
2022-01-13
A.5∶1 15∶2
B.15∶2 15∶2
C.15∶2 30∶2
D.30∶1 30∶2
E.30∶2 30∶2
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