Do you know the singer and dancer who () at the gate

A. is standing

B. are standing

C. is stand

D. standing

胎儿已娩出30min，胎盘未娩出，出血量约250ml。正确的处理措施为（）.

A.排空膀胱，确定胎盘有剥离征象后，轻轻按压子宫底，静注缩宫素，牵引脐带

B.行手取胎盘术

C.肌注麦角新碱

D.输液

E.等待，无需干预