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【简答题】
关系的完整性约束条件包括三大类:实体完整性、( )和用户自定义完整性
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反馈参考答案：
举一反三
【单选题】(Section A short conversation) 7.
A.
George's brother
B.
George's wife.
C.
George's father
D.
George's wife's father.
【简答题】Short Conversation Long Conversation Passage 1 Passage 2 1 2 3 4 5 6 7 8 9 10
【单选题】(Section A short conversation) 7.
A.
He must meet his teacher.
B.
He must attend a class.
C.
He must go out with his girlfriend.
D.
He must stay at school to finish his homework.
【简答题】Short Conversation7. ( )A. Both the man and the woman were in class Friday.. B. The woman was in class Friday but the man was not. C. Neither the man nor the woman was in class Friday. D. The man wa...
【单选题】Short conversation 5 (7)
A.
The woman is an actress.
B.
The woman is an native American.
C.
The woman came to the United States from another country.
D.
The woman works as a tourist guide and travels all over the world.
【简答题】Short Conversation12. ( )A. 7:30 p.m. B. 8:00 p.m. C. 8:30 p.m. D. 9:00a.m.
【简答题】彩色透射原稿分为 、 和 三种。
【单选题】Short Conversation 7. ( )
A.
Both the man and the woman were in class Friday..
B.
The woman was in class Friday but the man was not.
C.
Neither the man nor the woman was in class Friday.
D.
The man was in class Friday but the woman was not.
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