反映均数抽样误差大小的指标是
A.标准误
B.标准差
C.变异系数
D.均数
E.全距
参考答案:A
根据句意及首字母的提示,补全单词
1. Advertising is e . You can see it easily.
2. Don't believe him. He didn't tell the t .
3. The seats are so h that we don't want to stay.
4. I felt while speaking in front of the public.
5. There is little money in the boy's p .
经检查确定在右肾盂有一个直径为2.0cm×3.0cm大小结石,形状不规则并有轻度肾积水最适宜的治疗是
A.右肾造瘘,经肾镜取石
B.ESWL
C.输尿管镜取石
D.置Double-J+ESWL
E.肾实质切开取石