数据的主要层次可分为( )
A.一层
B.二层
C.三层
D.四层
正确答案是C
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/248428.html
上一篇:The paradox of these big houses is that often they are not big at all. Those massive detached villas outside cities probably have a greater number of rooms.
下一篇:弗洛伊德的动力理论包括( )