设计数据库的存储结构属于( )。A.需求分析 B.概念设计 C.逻辑设计 D.物理 发布时间:2018-01-14 10:59 │ 来源:www.tikuol.com 题型:单项选择题 问题: 设计数据库的存储结构属于( )。A.需求分析B.概念设计C.逻辑设计D.物理设计
题型:单项选择题 —How are things going?—The disabled ________ no relatives in Guangzhou ________ by the volunteers, who will graduate from Zhongshan University next year.A.with, are taking care ofB.have, will be taken care ofC.with, are being taken care ofD.have, are being taken care of 查看答案
题型:单项选择题 甲醛在一定条件下发生如下反应:2HCHO+NaOHHCOONa+CH3OH,在此反应中关于甲醛的下列叙述中正确的是( )A.仅被氧化B.仅被还原C.既被氧化又被还原D.既未被氧化又未被还原 查看答案