单项选择题
“有效”胸外按压的频率、按压深度是多少()
A.80次/分,3~4cm
B.100次/分,3~4cm
C.120次/分,3~4cm
D.100次/分,5cm以上
E.60次/分,4~5cm
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单项选择题
A.80次/分,3~4cm
B.100次/分,3~4cm
C.120次/分,3~4cm
D.100次/分,5cm以上
E.60次/分,4~5cm
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