题目内容
临产的重要标志是
2021-11-01
A.规律宫缩，进行性宫口扩张和胎先露下降
B.见红，破膜，规律宫缩
C.见红，先露下降，伴尿频
D.见红，规律宫缩，宫口开张不明显
E.规律宫缩，见红
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