A: I'm anxious to get started on our project. Can we meet sometime before the weekend? B: ______.
A.Never mind. Shall we meet on Sunday?
B.Your project? I have no time studying your project.
C.What about Friday morning? I'll have time to go to the library that afternoon.
D.OK. Library is the best place for us to meet.
第1题
若所建立索引的字段值不允许重复,并且一个表中只能创建一个,它应该是
A.主索引
B.唯一索引
C.候选索引
D.普通索引
第2题
若所建立索引的字段值不允许重复,并且一个表中只能创建一个,它应该是 ______。
A.主索引
B.唯一索引
C.候选索引
D.普通索引
第3题
若所建立索引的字段值不允许重复,并且一个表中只能创建一个,它应该是
A.主索引
B.惟一索引
C.候选索引
D.普通索引
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