胎头宫缩时暴露于阴道口，当宫缩间歇时又缩回阴道内，称为A:胎头着冠 B:胎头拨露 C:胎头俯屈 D:胎头仰伸 E:胎头下降

作者: tihaiku 人气: - 评论: 0

问题胎头宫缩时暴露于阴道口，当宫缩间歇时又缩回阴道内，称为

选项 A:胎头着冠 B:胎头拨露 C:胎头俯屈 D:胎头仰伸 E:胎头下降

答案 B

解析

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