组中值是代表各组标志值( )的数值。
A.平均水平
B.最大
C.最小
D.任意
正确答案是A
扫描二维码免费使用微信小程序搜题/刷题/查看解析。
版权声明:本文由翰林刷题小程序授权发布,如需转载请注明出处。
本文链接:https://doc.20230611.cn/post/77056.html
上一篇:7.若关系R和S分别包含r和s个属性,且含有m个公共属性,则
7.若关系R和S分别包含r和s个属性,且含有m个公共属性,则
下一篇:1.Pawn shops are businesses where people bring their possessions to sell or to get a short-term loan. Pawn shops may be large or small, clean or dirty, but they are all full of stories. The United States has about ten thousand of them.2.In th