数据的独立性包括A.数据的结构独立性和组织独立性 B.数据的结构独立性和数据的逻辑独

题型:单项选择题

问题:

数据的独立性包括

A.数据的结构独立性和组织独立性

B.数据的结构独立性和数据的逻辑独立性

C.数据的物理独立性和数据的逻辑独立性

D.数据的结构独立性和数据的物理独立性

考点:计算机等级考试数据库技术三级数据库技术笔试96
题型:单项选择题

阅读理解。

     You need 3D glasses to see some films. I think it is easy to make your own 3D glasses instead of buying

them.

      There are two ways to make 3D glasses. You can decide which way would be easier for you.

      The first way seems like the cheaper way but the things needed to make the glasses this way may not be

things laying around the house. First print out a template(模板) for the glasses at

http://paperproject. org/ PDF files/3 dglasses. pdf. 

     After you cut out the template, cut your cellophane (玻璃纸) to fit the holes in the glasses. Make sure you

place the red cellophane on the left eye and the blue on the right. You can either stick or tape the cellophane in

place. You are now ready to use your glasses.

     To leam more about why your eyes see different colors, read this article:

http:// nzphoto. tripod. com/sterea/anaglyphs. htm#redcyan.

     To learn some more cool things about your eyes, check out the games at this link:

http_://faculty. washington. edu/chudler/chvision. html.

     Another way you can make 3D glasses is to find an old pair of sunglasses. Take out the lenses(镜片).

Get a piece of clear plastic and place the lenses on it, draw a line around the lens and then cut the new

plastic lens out. Place the lens back into the sunglasses frame (框). Color the left lens red with a marker

and the right eye blue. You now are ready to watch 3D films.

1. When do we need to use 3D glasses?

A. When the sun is bright.

B. When we cook dinner.

C. When we make things.

D. When we see some films.

2. If we want to know why our eyes see different colors, we can find the information at____.

A. http://paperproject. org/PDF files/3dglasses. pdf

B. http://nzphoto. tripod. com/sterea/anaglyphs. htm#redcyan

C. http://faculty. washington. edu/chudler/chvision. html

D. http://www. xcjyyxw. cn/tresearch/XCindex/index. js

3.What does the writer think of making our own 3D glasses?

A. Easy.

B. Hard.

C. Interesting.

D. Boring.

题型:单项选择题

超声测量胎儿腹围应选择的水平是()。

A.胎儿肾脏上极

B.胎儿心脏下部

C.胎儿胆囊

D.胎儿肝内门脉左支和胃

E.脐带入腹壁处

题型:单项选择题

根据作用机制分析,奥美拉唑是()

A.粘膜保护药

B.胃壁细胞H+泵抑制药

C.胃泌素受体阻断药

D.H2受体阻断药

E.M胆碱受体阻断药

题型:单项选择题

高速行车中行车制动突然失灵时,驾驶人要如何制动?

A.连续踩踏制动踏板

B.抢挂低速档减速后,使用驻车制动

C.迅速踏下离合器踏板

D.迅速拉紧驻车制动器操纵杆

题型:单项选择题

《中华人民共和国药典》最早颁布的时间是()

A.1949年

B.1953年

C.1963年

D.1977年

E.1989年

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