单选题外围电路用ECL电路，使用8K×4bit的sram存储器芯片构成256K×32bit的cache存储器。则需要 (5) 片存储芯片。

单选题程序语言可分成低级语言和高级语言两大类。与高级语言相比，用低级语言开发的程序，其 (39) ，但在 (40) 的场合还经常或部分地使用低级语言。在低级语言中，汇编语言与机器语言十分接近，它使用了 (41) 来提高程序的可读性。高级语言有许多种类，其中PROLOG是一种 (42) 型语言，它具有很强的 (43) 能力。

单选题若一棵度为7的树有8个度为1的结点，有7个度为2的结点，有6个度为3的结点，有5个度为4的结点，有4个度为5的结点，有3个度为6的结点，有2个度为7的结点，则该树一共有 (48) 叶结点。

单选题已知二维数组A[1:4,1:6)采用行序为主序方式存储，每个元素占用3个存储单元，并且A[1，1]的存储地址为1200，，元素A[2,4]的存储地址是 (46) 。

单选题“＜title style="italic"＞science＜/title＞”是一个XML元素的定义，其中元素标记的属性值是______。 A．title B．style C．italic D．science

单选题某软件公司统计发现该公司每10000行C语言源代码形成源文件(.c和.h文件)约为25KB。该公司开发的一个益智游戏软件源文件大小为375KB，累计投入工作量为16个月，每个月费用为9000元，则该项目1LOC的价值约为{{U}} (19) {{/U}}元/LOC。

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{{U}} (42) {{/U}}。

单选题在一棵二叉树的二叉链表中，空指针数等于非空指针数加 (55) 。

单选题以下列出了系统维护工作流程中的几项关键步骤，正确的工作顺序是{{U}} (33) {{/U}}。 ①用户提交维护申请报告 ②交付使用 ③更新文档 ④测试 ⑤核实和评价维护申请报告 ⑥制定维护计划 ⑦实施维护

单选题一个作业8：00到达系统，估计运行时间为1小时。若10:00开始执行该作业，其响应比是 (31) 。

单选题根据《计算机软件质量保证计划规范》(GB/T12504-1990)的规定，______是指确定在软件开发周期中的一个给定阶段的产品是否达到在上一阶段确立的需求的过程。 A．测试 B．验证 C．确认 D．审计

单选题在计算机输出的声音中，不属于合成声音的是{{U}} (13) {{/U}}。

单选题将E-R图向关系模型转换时，若将3个实体之间的多对多联系m:n:p转换为关系模式，则该关系模式的关键字为______。 A．任意两个实体的关键字的组合 B．各实体的关键字的组合 C．任意一个实体的任意一个属性 D．任意一个实体的关键字

单选题 (33) 从二叉树的任一结点出发到根的路径上，所经过的结点序列必按其关键字降序排列。

单选题以下程序段违反了算法的{{U}}(61){{/U}}原则。

单选题数字语音的采样频率定义为 8kHz，这是因为( )

单选题下图所示为一个不确定有限自动机(NFA)的状态转换图