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【简答题】
关于数据库的三级模式结构,下列论述中正确的是( )。 A)三级模式结构是数据库唯一的一种分级模式结构 B)外模式/概念模式映像为数据的物理独立性提供支持 C)一个数据库可以有多个内模式 D)外模式是概念模式的一个逻辑子集,且外模式的某些描述可以与概念模式不同
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参考答案:
举一反三
【单选题】在制定计划时尽可能预见可能发生的情况,并留有余地,体现了管理的
A.
反馈原则
B.
能级原则
C.
动力原则
D.
弹性原则
E.
反馈原则
查看完整题目与答案
【单选题】听力原文:W: Hi, Burt. I heard you're looking for a new job. How is it going? M: I just had an interview yesterday. I think I did well. The director seemed to like me. They said they would make a decision ...
A.
He will probably fail.
B.
The chance is half-and-half.
C.
He will probably get the job.
D.
He is not satisfied with the offer.
查看完整题目与答案
【判断题】职业生涯发展的起点是首次就业。
A.
正确
B.
错误
查看完整题目与答案
【判断题】首次就业是中职生重要的人生转折,是职业生涯发展的重要经历和起点。
A.
正确
B.
错误
查看完整题目与答案
【单选题】---Would you like tea or coffee? --- I need of them. I just had a large glass of water 5 minutes ago.
A.
neither
B.
either
C.
none
查看完整题目与答案
【简答题】Xiao Li: I'm sorry, Professor Liu. I have to be late again. I just had a car accident. Professor: What? An accident!______?
查看完整题目与答案
【单选题】- Perhaps you don't believe it. I just had a close call. ( )
A.
What happened?
B.
Who called you?
C.
Was it from your close friend?
查看完整题目与答案
【单选题】是职业生涯发展的起点。
A.
迈入职业学校大门
B.
开始职业生涯规划
C.
首次就业
D.
开始创业
查看完整题目与答案
【判断题】首次就业是职业生涯发展的重要经历和起点。 ( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】( )是职业生涯发展的起点。
A.
迈人职业学校大门
B.
开始职业生涯规划
C.
首次就业
D.
开始创业
查看完整题目与答案
相关题目:
【单选题】在制定计划时尽可能预见可能发生的情况,并留有余地,体现了管理的
A.
反馈原则
B.
能级原则
C.
动力原则
D.
弹性原则
E.
反馈原则
查看完整题目与答案
【单选题】听力原文:W: Hi, Burt. I heard you're looking for a new job. How is it going? M: I just had an interview yesterday. I think I did well. The director seemed to like me. They said they would make a decision ...
A.
He will probably fail.
B.
The chance is half-and-half.
C.
He will probably get the job.
D.
He is not satisfied with the offer.
查看完整题目与答案
【判断题】职业生涯发展的起点是首次就业。
A.
正确
B.
错误
查看完整题目与答案
【判断题】首次就业是中职生重要的人生转折,是职业生涯发展的重要经历和起点。
A.
正确
B.
错误
查看完整题目与答案
【单选题】---Would you like tea or coffee? --- I need of them. I just had a large glass of water 5 minutes ago.
A.
neither
B.
either
C.
none
查看完整题目与答案
【简答题】Xiao Li: I'm sorry, Professor Liu. I have to be late again. I just had a car accident. Professor: What? An accident!______?
查看完整题目与答案
【单选题】- Perhaps you don't believe it. I just had a close call. ( )
A.
What happened?
B.
Who called you?
C.
Was it from your close friend?
查看完整题目与答案
【单选题】是职业生涯发展的起点。
A.
迈入职业学校大门
B.
开始职业生涯规划
C.
首次就业
D.
开始创业
查看完整题目与答案
【判断题】首次就业是职业生涯发展的重要经历和起点。 ( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】( )是职业生涯发展的起点。
A.
迈人职业学校大门
B.
开始职业生涯规划
C.
首次就业
D.
开始创业
查看完整题目与答案
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