应用子宫收缩药不当可导致()
A.胎盘剥离后滞留
B.胎盘嵌顿
C.胎盘粘连
D.软产道裂伤
E.凝血功能障碍
参考答案:B
爆破作业人员分为()。
A.爆破员
B.安全员
C.保管员
D.爆破工程技术人员
If the tunnel was built, it would Britain France for the first time in history. [ ]
A. connect; to
B. link; up
C. join; with
D. connect; up