从供选择的答案中选出应填入下列叙述中（)内的正确答案： 在ISO的OSI模型中，提供流量控制功能的层

从供选择的答案中选出应填入下列英文语句中( )内的正确答案。

供选择的答案：

(1) manage (2) perform (3) support (4) reduce (5) divided

(6) enhance (7) implemented (8) introduce (9) ranked (10) run

从供选择的答案中，选出应填入下面叙述中______内的最确切的解答。

Soon, more of the information we recelve via the internet could come(1)in digital wrappers.

Wrappers are made up(2)software code that's targeted to do specific things with the data(3)within them, such as helping to define queries for search engines. They also keep(4)from(5)access to that code.

从供选择的答案中，选出应填入下面叙述中______内的最确切的解答。

Basically,a firewall is a(1)process or a set ofintegrated processes that runs on a router or(2)to control the flow of networked application traffic(3)through it.Typically, firewalls are placed on the entry point to a(4)network such as the Internet. They could be considered traffic cops. The firewall's(5)is to ensure that all communication between an organization's network and the Internet conform to the organization's security policies.

从供选择的答案中，选出应填入下面叙述中______内的最确切的解答。

MIMD systems can be classified into(1)oriented systems, high-availability systems and response-oriented systems. The goal of(1)oriented multiprocess is to obtain high(1)(2)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(3)and(4)loading ofsystem(5)．

从供选择的答案中选出应填入下列叙述中()内的正确答案：

数据库系统是由(A) 、(B) 、(C) 和软件支持系统组成，其中(A) 是物质基础，软件支持系统中(D) 是不可缺少的，(B) 体现数据之间的联系，(C) 简称DBA。常见的数据模型有多种， 目前使用较多的数据模型为(E)模型。

供选择的答案

A～D：①计算机硬件 ②C语言 ③CPU ④数据库管理系统

⑤数据库 ⑥主菜单 ⑦人 ⑧网络管理系统

E： ①层次 ②网状 ③关系 ④拓朴

从供选择的答案中选出应填入下列叙述中()内的正确答案：

(1)PC总线(A)

(2)输入设备(B)

(3)网络技术(C)

(4)CPU(D)

(5)汉字技术(E)

供选择的答案

A～E：①EISA、PCI、DMA ②键盘、光笔、显示器

③EISA、ISA、PCI ④P5、80386、DRAM

⑤路由器、网桥、PowerPC ⑥触摸屏、摄象机、鼠标器

⑦Internet、TCP/IP、Gateway ⑧CD-ROM、ISA、MPC

⑨国标码、外码、MPC ⑩PowerPC、Pentium、Super SPARC

(11)内码、GB2312-80、字模 (12)X.25、PCI、数据压缩技术

从供选择的答案中选出应填入下列英文语句中______内的正确答案。

The obvious advantage of a Graphical User Interface (GUI) is to organize the computer to make(1)fromahuman(2), rather than to force users to adapt to the(3)of computers and software. GUI is converging to the point where a(4)person can walk up to a computer, experiment briefly with the mouse and the(5)objects on screen, and gain some understanding ofhow to accomplish basic tasks.

供选择的答案：

(1)iconic (2) converge (3) sense (4) use

(5) perspective (6) capable (7) peculiarities (8) imaging

从供选择的答案中选出应填入下列叙述中()内的正确答案：

多媒体技术中，图形格式一般为两类，即(A) 和(B) 。具体的存储方式有许多种，通常用图形文件的后缀名来区分，如以(C) 为后缀名的，则是以ASCII方式存储的图形；而(D) 则不是图形文件的后缀名。多媒体中的视频信息是指(E)。

供选择的答案

A：①灰度 ②位图 ③函数 ④高分辨率

B：①彩色 ②场 ③矢量 ④低分辨率

C：①DIF ②MPG ③JPG ④BMP

D：①DIB ②WMF ③T1F ④WAV

E：①屏幕图像刷新频率 ②图像扫描输入频率

③动态图像 ④静止图片

从供选择的答案中选出应填入下列英文语句中______内的正确答案。

Say there are ten thousand computer shops in the U.S. and Canada. If each shop has a thousand programs, and if half of these programs use the data(1)more than just printing, we are thinking(2)five million programs that must(3)during the next years to take care of the year 2000 changeover. Several hundred thousand programs need(4). And that is only if we start right now. All of this will be in addition to the ongoing maintenance and development work that must(5).