描述一组对数正态分布资料的集中趋势宜采用()
A.均数
B.中位数
C.几何均数
D.标准差
E.变异系数
参考答案:C
__________cleaning the yard and making up the beds for the old, we also read newspapers for them
and had chats with them. [ ]
A. Except for
B. Rather than
C. Apart from
D. Instead of
旅游团计划在北京停留五晚,黄先生夫妇原定与在京朋友活动,最后一晚归队。但一天后他们突然归队。对此,地陪应持的态度是:()
A.表示惊讶,告知无法安排他们食宿
B.表示欢迎,安排好他们的食宿并随团活动
C.欢迎,安排他们随团活动但请其回朋友家住宿
D.欢迎,安排随团活动但告知在京的食宿费用自理