数据库技术的主要特点【 】,具有较高的数据和程序的独立性以及对数据实行集中统一的

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问题:

数据库技术的主要特点【 】,具有较高的数据和程序的独立性以及对数据实行集中统一的控制。

考点:计算机等级考试数据库技术计算机三级(数据库技术)13
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Last Friday a storm swept through two villages in the New Territories, destroying  fourteen homes. Seven others were so badly damaged that their owners had to leave them, and fifteen others had broken windows or broken roofs. One person was killed, several were badly hurt and taken to hospital, and a number of other people received smaller hurt. Altogether over two hundred people were homeless after the storm.

A farmer, Mr. Tan, said that the storm began early in the morning and lasted for over an hour.

"I was eating with my wife and children," he said, "When we heard a loud noise. A few minutes later our house fell down on top of us. We tried our best to climb out but then I saw that one of my children was missing. I went back inside and found him, safe but very frightened."

Mrs. Woo Mei Fong said that her husband had just left for work when she felt that her house was moving. She ran outside at once with her children.

"There was no time to take anything," she said, "A few minutes later, the roof came down."

Soldiers helped to take people out of the flooded area and the welfare department (福利机构) brought them food, clothes and shelter.

小题1:How was one of Mr. Tan’s children after the storm?

A.Lost.

B.Dangerous.

C.Frightened.

D.Not found.小题2:Mrs. Woo and her family didn’t get hurt because _________.

A.her husband knew there would be a storm.

B.they were all outside the house when the storm became worse.

C.she felt the house was moving.

D.the welfare department helped her.小题3:Which of he following may be the best title for this passage?

A Terrible Storm.  B. A Lucky Woman.  

C. Good Soldiers.  D. Clever People.

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十一届全国人大代表中,工人、农民代表占18.46%,知识分子代表占21.14%,干部代表占32.44%,民主党派和无党派代表占16.09%,解放军代表占8.98%,此外,不包括香港、澳门特别行政区和归国华侨等方面的代表。这充分体现出我国社会主义民主具有______性的特征。 [ ]

A.权利真实

B.权利阶段

C.主体广泛

D.主体平等

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增压机的作用是什么?

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金属的晶体结构最常见的三种类型有哪些?

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实际上,软件和硬件在逻辑功能上是等效的。但是,软件和硬件在()和()上是不等效的。

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