单选题某项目组拟开发一个大规模系统,且具备了相关领域及类似规模系统的开发经验。下列过程模型中, (15) 最适合开发此项目。
单选题进程的五态模型包括运行状态、活跃就绪状态、静止就绪状态、活跃阻塞状态和静止阻塞状态。针对图3-4的进程五态模型,为了确保进程调度的正常工作,(a)、(b)和(c)的状态分别为{{U}}(21){{/U}}。
单选题设某上下文无关文法如下:S→11 | 1001 | S0 |SS,则该文法所产生的所有二进制字符串都具有的特点是( )。
单选题______协议可支持在电子邮件中的包含文本、图像、声音、视频及其应用程序的特定数据。 A.HTTP B.SMTP C.FTP D.MIME
单选题OMT是一种对象建模技术,它定义了三种模型,其中______模型描述了系统中对象的静态结构以及对象之间的联系。
单选题集合L={ambm|m≥0}______。
A.可用正规式“a*b*”表示
B.不能用正规式表示,但可用非确定的有限自动机识别
C.可用正规式“ambm”表示
D.不能用正规式表示,但可用上下文无关文法表示
单选题采用面向对象开发方法时,对象是系统运行时基本实体。以下关于对象的叙述中,正确的是______。 A.对象只能包括数据(属性)B.对象只能包括操作(行为)C.对象一定有相同的属性和行为 D.对象通常由对象名、属性和操作三个部分组成
单选题某工程计划如图2-6所示,图中标注了完成任务A~H所需的天数,其中虚线表示虚任务。经评审后发现,任务D还可以缩短4天(即只需6天就能完成),则总工程可以缩短(36)天。
单选题由元素序列(27,16,75,38,51)构造平衡二叉树,则首次出现的最小不平衡子树的根(即离插入节点最近且平衡因子的绝对值为2的节点)为 (40) 。
单选题世界某一区域标准化团体所通过的标准称为 (10) 。
单选题MIMD systems can be classified into (71) -oriented systems, high-availability systems and response-oriented systems. The goal of (71) . oriented multiprocessing is to obtain high (71) (72) minimal computing cost. The techniques employed by multiprocessor operating systems to achieve this goal take advantage of an inherent processing versus input/output balance in the workload to produce (73) and (74) loading of system (75) .
单选题在TCP协议中,建立连接需要经过______阶段,终止连接需要经过______阶段。
单选题某开发组在开发某个系统时,各个阶段具有严格的界限,只有一个阶段的获得认可才能进行下一个阶段的工作,则该开发组最可能采用的软件开发方法是______。 A.构件化方法 B.结构化方法 C.面向对象方法 D.快速原型法
单选题图1-5UML类图所示意的设计模式的意图是{{U}}(49){{/U}}。
单选题以下关于浮点加减运算舍入处理的描述中,正确的是 (6) 。
单选题There is nothing in this world constant but inconstancy. --SWIFT
Project after project designs a set of algorithms and then plunges into construction of customer- deliverable software on a schedule that demands delivery of the first thing built.
In most projects, the first system built is ______ usable. It may be too slow, too big, awkward to use, or all three. There is no ______ but to start again, smarting but smarter, and build a redesigned version in which these problems are solved. The discard and ______ may be done in one lump, or it may be done pieceby-piece. But all large-system experience shows that it will be done. Where a new system concept or new tech nology is used, one has to build a system to throw away, for even the best planning is not so omniscient(全知的) as to get it right the first time.
The management question, therefore, is not whether to build a pilot system and throw it away. You will do that. The only question is whether to plan in advance to build a ______ , or to promise to deliver the throw away to customers. Seen this way, the answer is much clearer. Delivering that throwaway to customers buys time, but it does so only at the ______ of agony(极大痛苦) for the user, distraction for the builders whih they do the redesign, and a bad reputation for the product that the best redesign will find hard to live down.
Hence plan to throw dne away; you will, anyhow.
单选题以下关于线性表采用链式存储时删除结点运算的描述,正确的是______。
A.带头结点的线性链表删除结点时,不需要更改头指针
B.带头结点的线性链表删除第一个结点时,需要更改头指针
C.不带头结点的线性链表删除结点时,需要更改头指针
D.不带头结点的线性链表删除第一个结点时,不需要更改头指针
单选题人们平时所说的某个歌手是男高音或是女高音,这个高音,就是指的______高。
A.音量
B.音色
C.音调
D.声音的带宽
单选题结点数目为n的二叉查找树(二叉排序树)的最小高度为(52)、最大高度为(53)。
单选题软件维护工具不包括( )工具
