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
单选题关键码集合为18,73,10,5,99,27,41,51,32,25),构造一棵二叉排序树,则关键码为68的节点的度为 (46) ,该树的深度为 (47) 。
单选题表达式a*(b+c)-d的后缀表达形式为{{U}} {{/U}}。 A.abcd*+-- B.abc+*d- C.abc*+d- D.-+*abcd
单选题在面向对象的语言中,______。 A.类的实例化是指对类的实例分配存储空间 B.每个类都必须创建一个实例 C.每个类只能创建一个实例 D.类的实例化是指对类进行初始化
单选题
下列Shell程序的功能是,如果该程序执行时的参数个数为1则将由第一个参数指定的文件复制到/home/user1中,否则用vi打开这个文件。请将这个程序补全。
if [ {{U}}(26) {{/U}}=1] then
cp {{U}} (27) {{/U}} $HOME/userl
fi vi {{U}}(27) {{/U}} exit 0
单选题若内存按字节编址,用存储容量为32K×8比特的存储器芯片构成地址编号A0000H~DFFFFH的内存空间,则至少需要______片。 A.4 B.6 C.8 D.10
单选题以下关于增量模型的叙述中,正确的是______。
单选题已知关系R如下所示,关系R的主属性为 (35) :候选码为 (36) 。 R: X Y Z W 1 1 1 1 1 2 2 2 2 3 3 3 1 3 1 4 2 2 2 4 3 1 3 4
单选题在一个长度为n的顺序表中删除第i(0≤i≤n-1)个元素时,需要从前向后依次前移(39)个元素。如果在每个位置上进行删除元素的概率相同,均为。则删除时的平均移动数为(40)。
