产妇送上分娩床准备接产的指征是()
A.初产妇、经产妇有规律宫缩时
B.初产妇、经产妇宫口开大3~4cm且宫缩好
C.初产妇、经产妇宫口开大l0cm且宫缩好
D.初产妇宫口开大3~4cm、经产妇口开大10cm且宫缩好
E.初产妇宫口开大10cm、经产妇宫口开大6cm且宫缩好
正确答案:E
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