战略数据规划方法关键步骤中的第2步是确定研究的边界。James Martin给出了确

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问题:

战略数据规划方法关键步骤中的第2步是确定研究的边界。James Martin给出了确定合适的研究范围或边界的一些基本原则

Ⅰ.对小型企业或密集型的一体化企业,研究范围应包括整个企业

Ⅱ.对于联合企业,应先在一个公司内进行规划,并将取得的结果进行推广

Ⅲ.对于复杂的、多部门的企业,应首先在一个部门进行规划,然后推广

Ⅳ.研究范围的确定不取决于企业的规模,而是由企业的管理模式决定的

Ⅴ.研究范围的确定不取决于企业的管理模式,而是由企业的规模决定的

Ⅵ.研究范围的确定既要考虑企业的规模,也要考虑企业的管理模式

Ⅶ.无论多大规模的企业,都应该在整个企业范围内进行统一的规划

以上不正确的是

A.Ⅱ、Ⅲ和Ⅳ

B.Ⅳ、Ⅴ和Ⅶ

C.Ⅲ、Ⅳ、Ⅴ

D.Ⅳ、Ⅴ、Ⅵ和Ⅶ

考点:计算机等级考试信息管理技术三级信息管理技术笔试
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照样子写比喻句。    

例1:鹅毛般的苇絮就飘飘悠悠地飞起来。     

                                                                                                

例2:雨来浑身光溜溜的像条小泥鳅。     

                                                                                                 

例3:雨来像小鸭子一样抖着头上的水。

                                                                                                  

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When I was looking for a Christmas present for my daughter in a toy store, a nicely dressed little girl, with some money in her little hand, was looking at some beautiful dolls. When she saw a doll she liked, she would ask her father if she had enough money. He usually said yes.
At the same time, a boy, with old and small clothes, was looking at some video games. He, too, had money in his hand, but it looked no more than five dollars. Each time he picked up one of the video games and looked at his father, he shook his head.
The little girl had chosen her doll, a very beautiful one. However, she noticed the boy and his father. She saw the boy give up a video game with disappointment and walk to another corner of the store.
The little girl put her doll back to the shelf and ran over to the video game. After she talked to her father, she paid for the video game and whispered(耳语) to the shop assistant.
So the boy got the video game that he wanted for free—he was told it was a prize from the store. He smiled happily, although he felt it was so incredible. The girl saw all this happen. She smiled, too.
When I walked out of the store to my car, I heard the father ask his daughter why she had done that. I would never forget their short talk. "Daddy, didn’t Grandma want me to buy something that would make me happy"
He said, "Of course, she did."
"Well, I just did!" With that, the little girl started skipping towards their car happily.

The boy ______.

A. wore new and nice clothes
B. had much money in his hand
C. was from a poor family
D. wanted to get a doll very much

题型:单项选择题

水平地面上有一个重为4000N的箱子,现用起重机把箱子匀速吊到3m高的位置,起重臂下的钢丝绳是绕在一个动滑轮上,如图所示.钢丝绳上的拉力为2500N.试求:(g=10N/kg)

(1)起重机起吊该箱子所做的有用功是多少?

(2 )起重机起吊该箱子所做的总功是多少?

(3)起重机起吊该箱子的机械效率是多少?

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羊水的pH值是()

A.<3

B.3.5~4.5

C.6.5~7.0

D.4.5~6.5

E.7.0~7.4

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