哪项易发生脐带脱垂()
A.脐带过长
B.部分性前置胎盘
C.足先露,胎膜早破
D.双胎
E.枕后位
参考答案:C
—Bob, is there _______? —No, everything goes on well. [ ]
A. wrong anything
B. nothing wrong
C. anything wrong
D. wrong things
简述用睫状肌麻痹剂治疗急性前葡萄膜炎的作用机制。