在逻辑结构设计中,关系虽已达到规范化,但因某些属性过多时,可将它分为两个或多个关系模

题型:单项选择题

问题:

在逻辑结构设计中,关系虽已达到规范化,但因某些属性过多时,可将它分为两个或多个关系模式,这叫做

A.模式评价

B.优化模式

C.合并

D.分解

考点:计算机等级考试数据库技术三级数据库技术笔试62
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写出陶瓷生产中四种常用的解胶剂的名称()

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无意识包括( )。

A.心理活动不能很好地选择某些对象而舍弃另一些对象
B.心理活动不能全神贯注地聚焦在所选择对象上
C.无意识的行为和对刺激的无意识
D.无意识记和无意想像

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在地形图上表示的方法是用()

A.比例符号、非比例符号、半比例符号和注记

B.山脊、山谷、山顶、山脚

C.计曲线、首曲线、间曲线,助曲线

D.地物符号和地貌符号

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Their grandmothers fought for the vote, and their mothers have battled to have it all. Now the upcoming generation of girls have decided to turn the clock back and stay at home with their babies.

According to a survey of more than 5,000 teenage girls in Britain, their main ambition (追求的目标) is to complete university then stay at home. More than nine out of ten of the girls believe it should be up to their husbands to provide for them. And although 43 percent of those questioned believe they should continue with their education until they have achieved a university degree, one in four say getting married is the most important thing for them.

The supposedly super-modern, “fun comes first” teenage generation has proved to be very traditional in every area of their beliefs, with over 50 percent saying they would not dream of having children before seeing a ring on their finger.

The desire to have children is beginning earlier too. On average, teenage girls plan to have their first child at 26, and most plan to have one or two more children over the following four years. The national average now is 1.64 children per couple.

“This survey doesn’t show that the battles of feminism (女权运动) have been lost,” said author Claire Rayner, “Feminism was never opposed (反对) to marriage or children. On the contrary, feminism was about to equal opportunities for women to do what they wanted to do, when they wanted to do it, and this is exactly what these girls are choosing to do.”

小题1:The passage is mainly about ________.

A.the result of the battles of feminism

B.women’s struggle for independence in the society

C.the girls’ desire to stay at home after they graduate

D.women’s social status in the modern society小题2:Girls prefer to be housewives rather than independent women because _______.

A.it’s hard for women to find jobs

B.men would rather their wives look after babies at home

C.girls want to live a more comfortable life

D.women have a low salary小题3:. From the last paragraph we can see that Rayner thinks ________.

A.women should stay at home with their babies

B.women should find jobs and support the family

C.women should be offered more job opportunities

D.women should live the life they like

题型:单项选择题

社区警务战略的要求是:以社区为依托,立足社区,警民共建。 ( )

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