问题 单项选择题

企业经常要对收集的原始数据进行处理,数据处理的目的不包括 (21)

A.增加信息量

B.变换数据形式使其便于进一步处理

C.便于使用者检索

D.为管理人员提供决策支持

答案

参考答案:A

解析:

[分析]: 数据处理是按一定目的,用一定手段将所获得的原始信息进行加工处理。数据处理的目的是把信息的原始形式变换成便于观察、分析、查找、传递或易于进一步处理的形式;经过筛选分类、提取过滤和编辑整理,提高信息的质量;对数据进行加工计算、分离和选择,为管理人员提供管理、控制的依据;将经过处理的数据存储起来,以便于使用者检索;发布、销售数据,供客户使用。数据处理遵循“信息不增原理”,即数据信号的任何处理、提炼都不能使信息量增加;相反,处理的结果常常会损失一些信息量,处理的环节和次数越多,损失的机会就越大。对有些用户来说,最关心的是处理结果是否有用、有价值,不管是否损失了信息量。例如,对某个班级的考试成绩经过数据处理后,获得了平均值、最高与最低值。虽然损失了信息量,但领导看了觉得很有用。

选择题
阅读理解

阅读理解.

     It was Thanksgiving morning and m the crowded kitchen of my small home. I was

busy preparing the traditional Thanksgiving turkey when the doorbell rang. I opened

the front door and saw two small children in rags shaking inside the storm door on the

top step.

     " Anyoldpapers ,lady? " asked one of them.

     I was busy. I wanted to say " no" until I looked down at their feet. They were

wearing thin little sandals(凉鞋) , wet with heavy snow.

     "Come in and I'll make you a cup of hot cocoa. "

     They walked over and sat down at the table. Their wet sandals left marks upon the

floor. I served them cocoa and bread with jam to fight against the cold outside. Then I

went back to the kitchen and started again on my household budget.

     The silence in the front room struck me. I looked in. The girl held the empty cup in

her hands, looking at it. The boy asked in a flat voice, " Lady, are you rich?"

     " Am I rich?Mercy , no ! "

     I looked at the old furniture in the room. The girl put her cup back in its saucer

carefully and said, " Your cupsmatchyoursaucers. " Theyleftafter that, holding their

bundles of papers against the wind. They hadn't said" Thank you" . They didn't need

to. They had reminded me that I had so much for which to be grateful.

Plain blue china cups and saucers were only worth five pence. But they matched.

I tasted the potatoes and the meat soup. Potatoes and brown soup, a roof over our

heads, my man with a good steady job-these matched , too.

     I moved the chairs back from the fire and cleaned the living room. The muddy prints

of small sandals were still wet upon my floor. Let them be for a while, I thought, just in

case I should begin to forget how rich I am.

1. Two children came to the lady's front door because_______

A. it was Thanksgiving Day

B. it was too cold outside that day

C. they wanted to collect old papers

D. they wanted to have a cup of cocoa

2. Why did the lady let the children in?______

A. Because she showed great pity on them.

B. Because she had old papers to sell to them.

C. Because she knew them and wanted to make them hot cocoa.

D. Because she wanted to invite them to her Thanksgiving party.

3. The girl thought the lady was rich perhaps in that______

A. she saw that the lady's room was comfortable

B. she saw the cups matched the saucers

C. the furniture in the riving room looks new

D. the boy with her told her about that

4. From the passage , we can infer that whether you are rich or not depends on.______

A. how much money you have

B. what jobs you are doing

C. how you help others

D. how you feel about your life