在进行软件工程风险分析时,项目管理人员要进行4种风险评估活动,这4种风险活动是(26)以及确定风险估计的正确性。
一棵树高为k的完全二叉树至少有______个结点。
面向对象程序设计语言为(34)提供支持。
采用邻接表存储的图的深度优先遍历算法类似于二叉树的(57)。
图9—19所示为(46)设计模式,适用于:(47)。
标准化对象一般可分为两大类,一类是标准化的具体对象,即需要制定标准的具体事物;另一类是______。A.标准化抽象对象B.标准化总体对象C.标准化虚拟对象D.标准化面向对象
用UML建立业务模型是理解企业业务过程的第一步。使用活动图(Activity Diagram)可显示业务工作流的步骤和决策点,以及完成每一个步骤的角色和对象,它强调(42)。
软件可移植性是用来衡量软件的( )的重要尺度之一。
拓扑排序是将有向图中所有顶点排成一个线性序列的过程,并且该序列满足:若在AOV网中从顶点Vi到Vj有一条路径,则顶点Vi必然在顶点Vj之前。对于图8—7所示的有向图,(60)是其拓扑序列。
正在开发的软件项目可能存在一个未被发现的错误,这个错误出现的概率是0.5%,给公司造成的损失将是1000000元,那么这个错误的风险曝光度(Risk Exposure)是______ 元。
下面关于哈夫曼树的叙述中,正确的是(58)。
计算机执行程序所需的时间P,可用P=1×CPI×T来估计,其中l是程序经编译后的机器指令数,CPI是执行每条指令所需的平均机器周期数,T为每个机器周期的时间。RISC计算机是采用(25)来提高机器的速度。它的指令系统具有(26)的特点。
计算机通过MIC(话筒接口)收到的信号是(12)。
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 preelectronic mediam, following in the wake of the pamphlet and the book and in the company of the periodical. It was during the same time that the communications revolution speeded 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 processin perspective. It is important to do so.It is generally recognized, however, that the introduction of the computer in the early 20th century,(66)by the invention of the integrated circuit daring 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.
若将有限状态自动机(DFA)识别的0、1符号串看做二进制数,则自动机(27)识别的是能被十进制数3整除的正整数。
与10.1 10.12.29/29属于同一网段的主机IP地址是( ) 。
按照国际标准化组织制定的开放系统互连参考模型,实现端用户之间可靠通信的协议层是( )。
关于维护软件所需的成本,以下叙述正确的是(45)。
对于以下编号为①、②、③的正规式,正确的说法是______。 ①(aa*|ab)*b ②(a|b)*b ③[(a|b)*|aa]*b
以下关于软件测试的叙述中,正确的是(35)。
