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【多选题】
在SQL Server2000中，约束有非空约束、缺省约束、 [填空(1)] 、 [填空(2)] 、检查约束和唯一约束等6种类型。A.
主键约束
B.
外键约束
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举一反三
【单选题】How many strategies are to be discussed to improve one's reading speed?
A.
1
B.
2
C.
3
D.
4
【简答题】3 How many strategies are mentioned in the dialoguge? And the reasons.
【单选题】What is the author's attitude towards "culture shock" in the text "Studying Abroad and Culture Shock"?
A.
Positive.
B.
Negative.
C.
Neutral. (中立的)
D.
Defensive. (辩护的、卫护的)
【单选题】How many strategies are mentioned in the lecture to bridge the differences in gender communication? ___________.
A.
Three
B.
Four
C.
Five
D.
Six
【单选题】What is the author's attitude towards "culture shock" in the text "Studying Abroad and Culture Shock"?
A.
Positive
B.
Negative
C.
Neutral(中立的）
D.
Defensive（辩护的）
【单选题】Player 1 chooses either U or M; player 2 chooses either L or C. Both player know only that game 1 is played by probability p and game 2 is played by probability 1-p How many strategies player 1 has?
A.
2
B.
4
C.
6
D.
8
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