媒体可以分为感觉媒体、表示媒体、表现媒体、存储媒体、传输媒体,(14)属于表现媒体。
在CPU执行一段程序的过程中,Cache的存取次数为4600次,由主存完成的存取次数为400次。若 Cache的存取周期为5ns,CPU的平均访问时间为6.6ns,则主存的存取周期为(3)ns。
某服务器系统可用性达到99.99%,那么该系统每年的MTTR必须小于(4)。
在我国,汽车的车轮有4个,转向盘在前排的左座前,换档的装置在座位的右侧,这种规律性的结构称为(40)。
关于光纤传输,下列不具备的特征是(59)。
存储器中数据常用的存取方式有顺序存取、直接存取、随机存取和相联存取等4种,(28) 的存取时间与存储位置无关
某服务器收到一个数据包,其目标地址为193.154.17.8,该地址属于(24)子网。
(32)表示了对象间“is member of”的关系。
图像深度是指存储每个像素所用的位数。一幅彩色图像的每个像素用R、G、B3个分量表示,若3个分量的像素位数分别为4、4、2,则像素的深度为(60)。
某系统中有3个并发进程,都需要同类资源4个,试问该系统不会发生死锁的最少资源数是(32)。
需要一个16MB×8位的存储器,现有存储芯片为1MB×8位。则需要(2)个存储器芯片。存储器芯片的地址长度需要(3)位,主存储器的地址长度需要(4)位。
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.
在面向对象程序设计语言中,(31)是利用可重用成分构造软件系统的最有效的特性,它不仅支持系统的可重用性,而且还有利于提高系统的可扩充性;(32)可以及实现发送一个通用的消息而调用不同的方法;(33)是实现信息隐蔽的一种技术,其目的是使类的(34)相互分离。
操作系统主要是对计算机系统中的全部软硬件资源进行管理,以方便用户提高计算机使用效率的一种系统软件。它的主要功能有:处理机管理、存储管理、(17)、作业管理、(18)。Windows是一个具有图形界面的(19)系统软件。UNIX操作系统基本上是采用(20)语言编制而成的系统软件。在(21)操作系统的控制下,计算机能及时处理由过程控制反馈的信息并作出响应。
三对角矩阵是指除对角线及在主对角线上下最邻近的两条对角线上的元素外,所有其他元素均为0。现在要将三对角矩阵a[n][n]中三对角线上的元素按行存放在一维数组b[N]中,则N至少为(53),若a[0][0]存放于b[0],那么a在三对角线上的元素a[i][j](0≤i≤n—l,i一1≤j≤i+1)在一维数组b中的存放位置为(54),b[k]存储的元素在矩阵a中的行下标为(55)。
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)。
具有n个结点的二叉树,采用二叉链表存储,共有______个空链域。
Cache能够有效提高存储体系的速度,它成功的依据是(4) 。
软件维护工作越来越受到重视,因为它的花费常常要占软件生存周期全部花费的(1)%左右。其工作内容为(2)。为了减少维护工作的困难,可以考虑采取的措施是(3)。而软件的可维护性包含(4)。所谓维护管理主要指的是(5)等。
树是结点的有限集合,它(24)根结点,其余的结点分为m个(25)的集合。一个结点的子结点个数称为该结点的(26)。