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10.设一棵二叉树的先序序列为ABC,则有___种不同的二叉树可以得到这种序列
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1.在Windows7操作系统中文件夹是按___结构组织管理的。
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2.___操作系统是目前全球最大的一个自由软件,它是一个可与商业UNIX操作系统和Windows操作系统系列相娘美的操作系统,具有包括完备的网络应用在内的各种功能。
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3.___是用户对计算机进行配置的重要工具,默认安装了许多管理程序,还有一些应用程序和设备会安装它们自己的管理程序,以简化这些设备或应用程序的管理和配置任务。
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4.Windows7操作系統是由___公司开发的,具有革命性变化的操作系统。
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5.要安装Windows7操作系统,系统磁益分区必须为___格式。
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7.每个文件有且仅有一个文件名,操作系统通过文件名实现对文件的存取。文件名的格式为___[.扩展名]。
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10.在桌面状态下按___键可弹出“Windows帮助和支持”窗口。
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1.用户在使用Word2010编辑、查看或打印已有文档时,首先应当___已有文档。
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2.在Word2010中为了更好地组织冗长文档的编排,可使用___视图方式。在这种视图方式中,可以折叠文档以便只看标题、子标题,或者展开查看整个文档。
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3.___是人机交互的窗口,实际上是指Word2010显示文档的方式。
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4.电子表格由行列组成的工作表构成,行与列交叉形成的格子称为___,其是Excel2010中基本的存储单位,可以存放数值、变量、字符、公式等数据。
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5.在Exce12010 中,在A1单元格中输入= SUM8.7.8.7,则其值为___
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7.在PowerPoint2010中,演示文稿的扩展名是___
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8.在PowePoint2010中,___就是一组设计设置。其中包含颜色设置、字体选择、对象效果设置,在很多时候还包含背景图形。
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9.要在PowerPoin2010中对幻灯片进行保存、打开、新建等操作时,应在___选项卡中操作。
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1.在数据管理应用需求的推动下,在计算机硬件、软件发展的基础上.数据管理技术经历了___、___、___3个阶段。
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2,数据库三级模式体系结构的划分,有利于保持数据库的___
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3.用Acess2010创建的数据库文件,其扩展名是___
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4.分布式数据库是___上分散在计算机网络各结点上,而___上属于同一个系统的数据集合,
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5.数据库是长期在计算机内的、有组织的、可共享的数据的集合。数据库能为各种用户共享,具有较小的冗余度,数据间联系紧密,并且具有较高的___
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【填空题】
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【填空题】
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【填空题】
5.一种数据结构的元素集合D和它的二元关系R为D=【a,b,c,d,e,f,g,h】R-【<a,b>,<b,c>,<C,d>,<d,e>,<e,f>,<f.g>,<g,h>】则该数据结构具有___结构。
【填空题】
一种数据结构的元素集合D和它的二元关系R为D={1,2,3,4,5,6}. R= { 【1,2】,【2,3】,【2,4】,【3,5】,【3,6】 }则该数源结构具有___结构。
【单选题】
建筑物有特殊要求时引下线可以暗设,但截面积应___。
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控制电路通过的电流较小,画在原理图的___边。
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标示牌应当用___制作。
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B. 金属材料
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D. 没要求
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绝缘手套使用6个月必须进行___。
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直埋电缆与热力管接近的最小距离,应不小于___mm。
A. 500
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C. 1500
D. 2000
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在无值班的设备上工作时,第二份工作票由___收执。
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B. 工作监护人
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绝缘阻抗是绝缘电阻和分布电容的___组合。
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测量直流电时,电流表应与负载___在电路中。
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Since the matter was extremely ___, we dealt with it immediately.
A. tough
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She was so ___ in her job that she didn’t hear anybody knocking at the door.
A. attracted
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He is ___ about his chances of winning a gold medal in the Olympics next year.
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Jane was hit on the head by the robber and was knocked___.
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A. consistent
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The author of the report is well___with the problems in the hospital because he has been working there for many years.
A. informed
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The manager lost his ___ just because his secretary was ten minutes late.
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Many Europeans___ the continent of Africa in the 19th century.
A. exploded
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If you hear such a rumor,___ it thoroughly.
A. seek
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The pressure ___causes Americans to be energetic, but it also puts them under a constant emotional strain.
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Having decided to rent a flat, we ___ contacting all the accommodation agencies in the city.
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The old couple decided to ___ a boy and a girl though they had three children of their own.
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Mike was being ___for violent tendencies.
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I will___ Mr. Walters on this point.
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What happens in the next few days is___to our success.
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She won’t___that there is a problem.
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This offer is___ for travel before the end of April.
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___ to British universities depends on examination results.
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The database is only ___ by authorized managers.
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This traditional ___ is of indigo blue.
A. clothes
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These cigarettes are a ___ of the best tobaccos.
A. blend
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The tennis players need total ___ during play.
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He ___ that he was innocent.
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Columbus discovered America but did not ___ the new continent.
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The trees ___their foliage every year.
A. repeat
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Make a list of the various ___.
A. options
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I am well aware that this is a ___ job.
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I found their kindness quite ___.
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The captain wasn’t ___ on having him in the team.
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He was ___at the prospect of seeing them again.
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They ___ against travelling at night in such a dangerous country.
A. consul
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It is absolutely vital that food supplied should be ___.
A. sustained
B. enhanced
C. exhausted
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He must have had an accident, or he ___ then.
A. would have been here
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C. should be here
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It was essential that the application forms ___ back before the deadline (截止日期).
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We ___ our breakfast when an old man came to the door.
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The bridge was named ___ the hero who gave his life for the cause of the people.
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It wasn’t such a good dinner ___ she had promised us.
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The road now ___two kilometers beyond the river.
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