单选题广域网中广泛使用的拓扑结构是 (61) 。
单选题描述程序处理过程的工具称为过程设计的工具,它们可以分为图形、表格和语言3类,下述 (15) 不属于过程设计的工具。
单选题在图所示的有限自动机中,0是初始状态,3是终止状态,该自动机可以识别______。A.aabbB.aaabC.ababD.bbab
单选题( )详细描述软件的功能、性能和用户界面,以使用户了解如何使用软件。
单选题一个软件开发过程描述了“谁做”、“做什么”、“怎么做”和“什么时候做”,RUP用 (16) 来表述“谁做”。 A.角色 B.活动 C.制品 D.工作流
单选题下面关于程序语言的叙述,错误的是( )。
单选题 (66) 是将系统化的、规范的、可定量的方法应用于软件的开发、运行和维护的过程,它包括方法、工具和过程三个要素。ISO9000是由ISO/TC176制定的关于 (67) 和质量保证的国际标准。CMM提供了一个框架,将软件过程改进的进化步骤组织成5个成熟度等级。除第1级外,每个等级都包含了实现该成熟度等级目标的若干 (68) 。在软件开发的各种资源中, (69) 是最重要的资源。软件的复杂性是 (70) ,它引起人员通信困难、开发费用超支、开发时间超时等问题。
单选题Comparisons were drawn between the development of television in the 20th century and the diffusion of printing in the 15th and 16th centuries. Yet much had happened between. As was discussed before, it was not until the 19th century that the newspaper became the dominant pre- electronic (61) , following in the wake of the pamphlet and the book and in the (62) of the periodical. It was during the same time that the communications revolution (63) UP, beginning with transport, the railway, and leading on through the telegraph, the telephone, radio, and motion pictures into the 20th-century world of the motor car and the air plane. Not everyone sees that process in (64) . It is important to do so. It is generally recognized, (65) , that the introduction of the computer in the early 20th century, (66) by the invention of the integrated circuit during the 1960s, radically changed the process, although its impact on the media was not immediately (67) . As time went by, computers became smaller and more powerful, and they became "personal" too, as well as (68) , with display becoming sharper and storage (69) increasing. They were thought of, like people, (70) generations, with the distance between generations much (71) . It was within the computer age that the term "information society" began to be widely used to describe the (72) within which we now live. The communications revolution has (73) both work and leisure and how we think and feel both about place and time, but there have been (74) view about its economic, political, social and cultural implications. "Benefits" have been weighed (75) "harmful" outcomes. And generalizations have proved difficult.
单选题职员关系模式为E(Eno,Ename,Dept,Eage,Eaddr),其中Eno表示职员号,Ename表示职员名,Dept表示职员所在部门,Eage表示年龄,Eaddr表示职员的家庭住址。建立“开发部”职员的视图DS_E(DS表示开发部)如下,要求进行修改、插入操作时保证该视图只有开发部的职员。 CREATE VIEW DS_E AS SELECT Eno,Ename,Dept,Eage,Eaddr FROM E WHERE (64) 如下SQL语句可以查询开发部姓“王”职员的姓名和家庭住址。 SelectEname,Eaddr From DS_E Where (65) ;
单选题某软件产品注册版权后51年,原作者的______仍受到保护。 A.获得报酬权 B.使用许可权 C.署名权 D.转让权
单选题为了在状态空间树中{{U}} (58) {{/U}},可以利用LC-检索(Least Cost Search)快速找到一个答案节点。
单选题序设计语言一般都提供多种循环语句,有先判断循环条件再执行循环体的while语句,也有先执行循环体再判断循环条件的do-while语句,那么下列描述中正确的是______。
A.while循环语句能够实现的功能do-while不一定能实现
B.循环条件相同时,while语句的执行效率更高
C.while语句的循环体执行次数比循环条件的判断次数少1,而do-while语句的循环体执行次数等于循环条件的判断次数
D.while语句的循环体执行次数比循环条件的判断次数少1,而do-while语句的循环体执行次数比循环条件的判断次数多1
单选题软件公司A的职员谢某参与了某套管理信息系统的开发工作,后辞职到另一公司任职,于是项目负责人将谢某在该软件作品上的开发者署名更改为他人,该项目负责人的行为{{U}} (11) {{/U}}。
单选题I/O控制方式有多种,______一般用于大型、高效的系统中。 A.查询方式 B.中断方式 C.DMA方式 D.I/O通道
单选题对如下AOV网进行拓扑排序,不可能得到______。
单选题
单选题Cache能够有效提高存储体系的速度,它成功的依据是______。
单选题给定一个有n个元素的有序线性表。若采用顺序存储结构,则在等概率前提下,删除其中的一个元素平均需要移动{{U}} (58) {{/U}}个元素。
单选题采用McCabe度量法计算下图环路复杂性为______。