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【单选题】
关于妊娠期子宫变化,错误的是:A.
妊娠中期开始，子宫峡部伸展变长，逐渐形成子宫下段
B.
妊娠后期大多数子宫向右旋
C.
子宫的血流量在妊娠后期受体位影响
D.
妊娠10子宫底出盆腔
E.
妊娠12-14子宫有不规则的无痛性收缩
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