骑跨伤最常见的泌尿系并发症为()
A. * * 外口狭窄
B. * * 膜部损伤
C. * * 假道形成
D. * * 内口狭窄
E. * * 球部损伤
参考答案:E
Please wait here. I’ll be back in _____ hours.
A.two and half an
B.two and a half
C.half and two
D.two a half
调速系统压油装置的正常运行是机组安全运行的必要条件。()