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【单选题】
下列关于产程的叙述，不正确的是A.
第一产程，又称宫颈扩张期，初产妇约需8～10小时，经产妇需6～8小时
B.
第二产程，又称胎儿娩出期，初产妇约1～2小时
C.
第三产程，又称胎盘娩出期，需5～15分钟，不超过30分钟
D.
第一产程不可见开，胎膜破裂
E.
临床通常分为3个产程
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