下列哪项不是痔疮术后的常见反应()
A.疼痛
B.小便困难
C.出血
D.发热(还有水肿)
E.肛门狭窄
参考答案:E
— Don't forget to phone me when you get home. Just to let me know you've arrived safely.
— I won't forget. Good-bye then.
— ____. [ ]
A. With pleasure
B. It's kind of you
C. Don't mention it
D. Have a nice trip
离心泵主轴上装有轴套,作用是对轮定位和保护主轴,防止填料或水中杂质磨损。