单项选择题
A.先兆早产 B.妊娠高血压综合征 C.先兆子宫破裂 D.前置胎盘 E.胎盘早剥
A.胎头受压 B.脐带受压 C.胎儿四肢受压 D.胎儿背部受压 E.胎儿躯干局部受压
A.11mg/24h B.12mg/24h C.13mg/24h D.14mg/24h E.15mg/24h