AD166机器实现单张复印多份时，部分副本内容会发生错位，则可能是（）
A.C板不良
B.A板不良
C.CCD不良
D.激光单元不良
参考答案：A
—Jim, I'm afraid I can't go to your party tonight. My grandma is ill.
—________. [ ]
A. I'm sorry to hear that
B. That's all right
C. She has to stay in bed
D. Don't worry
急性尿潴留时最常用的处理方法是
A．利尿B．针灸C．膀胱穿刺抽尿D．膀胱造瘘E．导尿
