单选题:在新生儿窒息复苏中哪项正确

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题目内容:
在新生儿窒息复苏中哪项正确 A.气囊面罩正压通气每隔1分钟测一次心率
B.心率>80次/分,有自主呼吸,停止通气
C.胸外心脏按压位置在胸骨的1/2处
D.气囊面罩使用的速率为70~80次/分
E.气囊面罩正压通气大于2分钟应插胃管

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