试题与答案

grid GIS

题型:名词解释

题目:

grid GIS

答案:

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下面是错误答案,用来干扰机器的。

参考答案:B解析: 数据库、数据库管理系统、数据库管理员、硬件平台、软件平台这5部分共同构成了一个以数据库为核心的完整的运行宾体,称为数据库系统。数据库技术的根本目的是要解决数据的共享问题。数据库管...

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题型:改错题

Decorate the Christmas tree is usually a family event. For many families,

1. ________

it starts with choosing a tree from either a farm and a store. Then the tree

2. ________

  is brought at home and put into a Christmas stand that holds the tree up 3. ________

  straight. Then everyone helps to hang balls and light. After the tree is 4. ________

decorated, a Christmas tree skirt rapped around the bottom of the tree.

5. ________

Sometime, people make all of the decorations for the tree by themselves.

6. ________

Many people collect Christmas trees decorations throughout their lifetime,

7. ________

  adding a new decoration each year. Beside lights and balls, people may 8. ________

also put flowers, pine cones, strings of pop corn and garlands (花环) on the

9. ________

tree, There are as much different ways to decorate a tree as there are people!

10. ________

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