在Visual FoxPro中，在数据库中创建表的CREATE TABLE命令中定义

发布时间：2018-07-15 08:34 │ 来源：www.tikuol.com

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问题：

在Visual FoxPro中，在数据库中创建表的CREATE TABLE命令中定义主索引、实现实体完整性规则的短语( )。

A．FOREIGN KEY

B．DEFAULT

C．PRIMARY KEY

D．CHECK

考点：计算机等级考试 VISUAL FOXPRO 二级VISUAL FOXPRO笔试381

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Give it to you like.[ ]

A. whom

B. whoever

C. who

D. when

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In a summer night in a city in Taiwan, Mary was
going on her way to school happily then suddenly
she felt the road was strong shaking. The trees were
torn up and many buildings were leaning down to a
ground. Even a car was destroyed by falling buildings.
She was knocked down by a tree before she knew. Doctors
carried him to safety and she was settled down in a tent
for treatment. After some time, she had got over.
See so many goods from the mainland of China and other
countries, she believed all the houses would be built.

1. _____
2. _____
3. _____
4. _____
5. _____
6. _____
7._____
8. _____
9. _____
10. _____

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试评析下面叙述是否正确，并阐述理由：

支付请求权和追索权均是持票人必定可以行使的权利，二者所请求给付的范围是相同的。

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整体优化原理

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涂料的力学性能用强度一项就可以完全表示了。

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