五步法操作中,第一步“计划”阶段需要从信息系统调阅()、()销量比重及其年度目标执行进度等数据。
A.重点品牌
B.知名品牌
C.20+10品牌
D.低焦油品牌
参考答案:A, D
—We've waited for the two singers for two hours. Will they be able to come here?
—I'm afraid ____ of them will come today. [ ]
A. neither
B. either
C. both
D. none
为了考虑安全性,每个部门的领导只能存取本部门员工的档案,为此DBA应创建相应的
A.视图(view)
B.索引(index)
C.游标(cursor)
D.表(table)