A. 主存储器 B. 外存储器 C. 移动硬盘 D. U盘
79计算机中时序产生器的作用是（）。 A. 保证和实际时间一致 B. 产生时序脉冲 C. 计算程序运行时间 D. 加快运行速度
80摄影机属于计算机的（）设备。 第14/17页 A. 存储设备 B. 输出设备 C. 输入设备 D. 以上都不对 81
外存储器用来存放暂时不用的程序和数据，且以（）的形式储存。 A. 程序 B. 数据 C. 文件 D. 记录
82与计算机结构无关的通用语言是（）。 A. 机器语言 B. 汇编语言 C. 算法语言 D. 操作系统
83以下计算机软件中（）与具体应用有关。 A. 操作系统
B. 数据库管理系统 C. 计算机语言编译系统 D. 文字处理软件
84计算机存储容量大小通常以（）来度量。 A. 字数 B. 位数 C. 字节数 D. 符号数
85在通信专业中，DSP的英文全称是（），“自适应的”通常翻译为英文是（）。 A. Data Signal Pulse
B. Digital Signal Processing C. Data Stream Property
D. Digital Spectrum Programming A. adaptive B. autonomous 第15/17页
C. automatic D. active
86In order to maintain the reach of a typical 100G WAN transport system(~1500km)，several system
improvements have to be made to recover the lost（），including the use of low-loss low-nonlinearity（），Raman amplification， and stronger error correction. A. noise B. SNR C. speed D. eeor
A. optical fiber B. traffic C. internet D. signaling
87But the hardware is designed to use even（）power than other schemes， making it
especially appropriate for such things as RFID tags， which must work for years（）any external power source. A. most B. more C. less D. other A. with B. without C. as D. than
88All traffic，be it e-mail or streaming video， travels via a method called packet switching，（） parcels out digital data into small chunks， or packets， and sends them over a network shared by
countless users. A. so B. which C. and D. who
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89【In the forthcoming years， Beyond-3G(B3G)environments will
undoubtedly be deployed in most parts around the globe， permitting a world class solution for network interconnection， A B3G context enables the efficient cooperation of existing wireless technologies， including cellular-based(e.g 2G/3G)，broadcast-oriented (e.g. DVB)-in specific DVB-H， and Internet-based(WLAN/WMAN)networks， all relying on enhanced IP as the unifying layer. Hence， in this particular and yet to be deployed environment， mobile， systems and platforms will permit to provide enhanced services toall applications across heterogeneous access
networks. This will effectively enlarge the scope of service deployment， availability and accessibility to the users】
Based on the paragraph above， it is shown that（）will be used as the higher layer protocol to unify cellular networks， broadcast networks and（）networks， which is enabled by the context of（）．
A. mobile systems and platforms B. 3G
C. heterogeneous access networks D. enhanced IP A. Internet-based B. WLAN C. WMAN D. B3G
A. IP network B. B3G C. internet
D. deployed environment