题目内容
正常分娩保护会阴的时间是
2021-10-13
A.初产妇宫口开全时
B.初产妇胎头着冠时
C.初产妇宫口开大4〜5cm，宫缩规律有 力时
D.经产妇宫口开全时
E.初产妇胎头拨露使阴唇后联合紧张时
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