题目内容
下列属于临产的标志的是
2022-01-10
A.见红，规律宫缩，胎头下降
B.规律宫缩，破膜，胎头下降
C.见红，破膜，宫口扩张
D.见红，破膜，规律宫缩
E.规律宫缩，胎头下降，宫口扩张
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