简述提高信息系统运行可靠性的技术。

题型:问答题 简答题

问题:

简述提高信息系统运行可靠性的技术。

考点:00051管理系统中的计算机应用00051管理系统中的计算机应用题库
题型:问答题 简答题

把一滴红墨水滴入一杯水中,过一会观察,杯中水都变红了,这主要是因为

①分子在不断地运动 ②分子很小 ③分子是由原子构成 [ ]

A.①

B.②

C.①②

D.①②③

题型:问答题 简答题
阅读文段,回答问题。
绿苔小题
  我既惊叹乔木的非凡气宇,也羡爱白花的动人香艳,然而,在我这狭小而瘠薄的园地上,却只生着斑斑绿苔。
  绿苔,它没有深的根、茂的叶,且颜色单调,形容猥琐。大约正是自惭形秽吧,所以它总是伏在墙根、屋后……默默地生长,不敢去同别的花木一争阳光的爱抚。
  自然,它不会赢得人们的注目,更不消说喜爱和赞美了。甚至,它有时还使踏在上面的人们一不留神,滑个踉跄,从而引起小小的不快呢?
  可是,我却独独窃爱我这块小小园地上的绿苔,你看:
  风卷来,雨倾来,花木们在风雨中折腰、摇摆,而那绿苔,依旧镇定地、冷静地绿着。
  酷暑炎炎,烈日之下,别处一些花木的叶子打了蔫,而眼前那斑斑绿苔,却仍自点缀着被晒得冒烟的土地,慰我心头焦渴,示我生命还在,而且还大有“苔痕上阶绿”的意境呢。每当读书作文倦怠之时,抬眼望望那青葱的颜色,也颇为怡然。
1.本文是要赞美绿苔,可前文却先写其貌不惊人,不受人注目,这是为什么?
___________________________________________________________________
2.作者为什么要赞美绿苔呢?从文中概括出它的两个特点。
___________________________________________________________________
3.本文能把无奇的绿苔写出新意,从中你能受到什么启发呢?
___________________________________________________________________
4.有人说做绿苔也是一种做人的姿态,你同意这种看法吗?说说看。
___________________________________________________________________
题型:问答题 简答题

阅读理解。

     Once an Englishman named Jack Brown went to Russia for a holiday. He stayed there for several months

and then came home again. Some of his friends visited him a few days after he got back. "I had a very

dangerous trip while I was in Russia," Jack said to them. "I wanted to see a friend of mine in the country and

the bad weather made me very late. So I was still traveling through a forest in a sleigh (雪橇) when the sun

went down. It was a long way from my friend's house when about twenty wolves began to follow my sleigh.

It was very dark in the forest. There was thick snow on the ground. It was cold, and there were no houses

for miles and miles. First I heard the wolves. The noise was terrible! The horses heard them, too. They were

frightened and began running faster. Then I saw long, gray forms among the trees, and soon the wolves were

near us. They were running very fast, and they didn't seem to get tired like the horses."

      "What did you do?" one of Jack's friends asked. 

      "When the wolves got very near," Jack answered, "I put up my gun and shot the first wolf. The sleigh

was moving about, but I hit the animal and killed it. Then all the other wolves stopped and ate it, so our sleigh

got away from them for a few minutes."

      "Then they finish their meal, and I heard them coming again. The moon was shining brightly on the snow

now, and after a few minutes I saw them running among the trees once more. They came nearer again, and

then I shot another of them, and the others stopped once more to eat it."

      "The same thing happened again and again, and my horses became more and more tired and ran slower

and slower until, after about two hours, only one wolf was still alive and following us."

       "Wasn't it too fat to run?" one of his friends asked.

1. Jack told his friends what happened to him when he was _____. [ ]

A. in England one winter evening

B. in Russia one winter evening

C. in America one winter morning

D. in Russia one winter morning

2. In the sentence:"They finish their meal", "meal" here means "_____". [ ]

A. the food Jack had brought with him

B. the meal prepared by Jack's friend

C. the wolf which had been killed by Jack

D. the dead animals on the way

3. According to what Jack said, the last wolf _____. [ ]

A. was the strongest of all

B. ran much faster than the other wolves

C. had eaten all the other wolves

D. was very fat and didn't ran fast enough

4. From what Jack's friend said we know that _____. [ ]

A. all the wolves had been shot by Jack

B. the last wolf was too fat to run

C. the friend did not believe what Jack had said

D. Jack was telling the truth

题型:问答题 简答题

躲避龙卷风最安全的地方是()。

A、高楼

B、平房

C、操场

D、地下室

题型:问答题 简答题

按( )的不同,可以将零售商划分为公司连锁零售商、自由连锁零售商、特许连锁零售商、零售商合作社、消费者合作社。

A.组织形式
B.职能
C.业态
D.业种

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