通信英语I 单项选择1． 抽样频率a. sampling rate b. repetition rate c. sampling frequency答案：c2． 数字通信a. digital communication b. digital transmission c. transmission path答案：a3． 帧格式a. synchronization word b. frame format c. reverse operation答案：b4． 噪声功率a. noisy environment b. signal levels c. noise power答案：c5． 含噪声的环境a. signal levels b. noisy environment c. noise power答案：b6． 模拟信号a. speech channel b. analog signal c. amplitude value答案：b7． 脉冲流 a. stream of pulses b. receiving terminal c. terrestrial system答案：a8． 传播路由a. transmission path b. transmission quality c. binary transmission答案：a9． 互联网a. network resource b. Internet c. interconnected systems答案：b10．命令a. copy b. host c. command答案：c11．拷贝a. address b. mouse c. copy答案：c12．搜索工具a. user interface b. searching tools c. electronic mail答案：b13．存取 a. access b. protocol c. copy答案：a14．网络资源a. textual messages b. remote terminals c. network resources答案：c15．文本信息a. information services b. hypertext protocol c. textual messages答案：c16．频谱a. bandwidth b. spread spectrum c. frequency band答案：b17．移动手机a. mobile subscriber b. mobile unit c. service performance答案：b18．频带a. frequency spectrum b. frequency band c. spread spectrum答案：b19．蜂窝互换机a. cellular switch b. cellular site c. mobile unit答案：a20．单边带a. single-sideband b. bandwidth c. service area答案：a21．服务区a. service area b. service performance c. service capability答案：a22．移动顾客a. mobile unit b. mobile subscriber c. mobile transceiver答案：b23．微处理器a. subsystems b. utilization c. microprocessor答案：c24．无线机架a. radio cabinet b. antenna c. mobile unit答案：a25．电路互换a. packet switching b. circuit switching c. message switching答案：b26．分组互...
