单选题以下关于计算机软件著作权的叙述，错误的是______。 A.软件著作权人可以许可他人行使其软件著作权，并有权获得报酬 B.软件著作权人可以全部或者部分转让其软件著作权，并有权获得报酬 C.软件著作权属于自然人的，该自然人死亡后，在软件著作权的保护期内，软件著作权的继承人可以继承各项软件著作权 D.为了学习和研究软件内含的设计思想和原理，通过安装、显示、传输或存储软件等方式使用软件的，可以不经软件著作权人许可，不向其支付报酬

单选题When you think of the Internet, you probably think of ".com." Just what do those three letters at the end of a World Wide Web address mean? Every computer that hosts data on the Internet has a (71) numerical address. For example, the numerical address for the White House is 198.137.240.100. But since (72) people want to remember long strings of numbers, the (73) was developed. It is a critical part of the Internet's technical infrastructure, correlates a numerical address to a word. To (74) the White House website, you could type its numerical address into the address box of your web browser. But most people prefer to use "www. whitehouse. gov." In this case, the domain name is (75) .

单选题使用（ ）命令可以释放当前主机自动获取的IP地址

单选题一个长度为n的顺序表的表尾插入一个新元素的渐进时间复杂度为 (35) 。

单选题ISO/IEC 9126软件质量模型中第一层定义了6个质量特性，并为各质量特性定义了相应的质量子特性。子特性{{U}} (33) {{/U}}属于可维护性质量特性。

单选题以下关于软件维护的叙述中，不正确的是（ ）

单选题从结构化的瀑布模型看，在软件生命周期中的几个阶段中，下面的几个选项中， (13) 出错对软件的影响最大。

单选题Software quality assurance is now an (71) sub-discipline of software engineering. As Bucldy and Oston point out, (72) software quality assurance is likely to lead to an ultimate (73) of software costs. However, the major hurdle in the path of software management in this area is the lack of (74) software standards. The development of accepted and generally applicable standards should be one of the principal goals of (75) in software engineering.

单选题由a、b构造且仅包含偶数个a的串的集合用正规式表示为______。

单选题软件系统的可靠性，主要表现在 (26) 。

单选题We know a computer is a machine that processes data (stored in main memory) into information, under control of a stored program. We also know that, internally, a computer is a binary machine; thus the data and the program instruictions must be stored in binary form. Characters are represented in (71) . Numbers are stored as binary numbers, with each bit's positional value significant. A computer's main memory is divided into bytes, words or both (depending on the system), and each of these basic storage units is assigned an (72) . Using this address, the processor can read or write selected bytes or words. The processor consists of a clock, an instruction control unit, an arithmetic and logic unit, and registers. Once a program is stored in main memory, the processor can begin to execute it. During (73) , the instruction control unit fetches an instruction from main memory; during (74) , the arithmetic and logic unit executes it. Precisely timed electronic pulses generated by the clock drive this basic (75)

单选题利用逐点插入建立序列(52,43,73,88,76,18,38,61,45,39)对应的二叉排序树之后，查找元素61要进行______次元素间的比较。 A．3 B．4 C．6 D．8

单选题以下关于事务的故障与恢复的叙述中，正确的是 (56) 。

单选题密码学的基本原则是 (59) 。传统加密算法中，替代密码是 (60) 。换位密码是 (61) 。

单选题假设一台按字节编址的16位计算机系统，采用虚拟页式存储管理方案，页面的大小为2KB，且系统中没有使用快表(或联想存储器)。某用户程序如图(a)所示，该程序的页面变换表如图(b)所示，表中状态位等于1和0分别表示页面在内存或不在内存。图(a)中的MOVEData1，Data2是一个4字节的指令，Data1和Data2表示该指令的两个32位操作数。假设MOVE指令存放在20417地址开始的内存单元中，Data1存放在6143地址开始的内存单元中，Data2存放在10239地址开始的内存单元中，那么执行MOVE指令将产生______次缺页中断，其中：取指令产生______次缺页中断，取Data1和Data2操作数分别产生______次缺页中断。

单选题在客户端除了可以使用nslookup命令之外，还可以使用{{U}} (66) {{/U}}命令来测试DNS是否正常工作。

单选题若某面向对象系统中的某子模块需要为其他模块提供访问不同数据库系统(Oracle、SQLServer、DB2 UDB等)的功能，这些数据库系统提供的访问接口有一定的差异，但访问过程却都是相同的，例如，先连接数据库，再打开数据库，最后对数据进行查询。{{U}} (50) {{/U}}设计模式可抽象出相同的数据库访问过程。

单选题阅读下列流程图：当用判定覆盖法进行测试时，至少需要设计______个测试用例。A．2B．4C．6D．8

单选题关系R、S 如下图所示，RS 可由 （54） 基本的关系运算组成，RS = （55） 。