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:c 2.数字通信 a. digital communication b. digital transmission c. transmission th 答案 3.帧格式 a. synchronization word b. frame format c. reverse operation 答案:b 4.噪声功率 a. noisy environment b. signal levels c. noise power 答案:c 5.含噪声的环境 a. signal levels b. noisy environment c. noise power 答案:b 6.模拟信号 a. speech channel b. analog signal c. amplitude value 答案:b 7.脉冲流 a. stream of pulses b. receiving terminal c. terrestrial system 答案 8.传输路由 a. transmission path b. transmission quality c. binary transmission 答案 9.互联网 a. network resource Internet c. interconnected systems 答案:b 10.命令 a. copy b. host c. command 答案 11.拷贝 a. address b. mouse c. copy 答案:c 12.搜索工具 a. user interface b. searching tools c. electronic mail 答案:b 存取 a. access b. protocol c. copy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：c 2．数字通信 a. digital communication b. digital transmission c. transmission path 答案：a 3．帧格式 a. synchronization word b. frame format c. reverse operation 答案：b 4．噪声功率 a. noisy environment b. signal levels c. noise power 答案：c 5．含噪声的环境 a. signal levels b. noisy environment c. noise power 答案：b 6．模拟信号 a. speech channel b. analog signal c. amplitude value 答案：b 7．脉冲流 a. stream of pulses b. receiving terminal c. terrestrial system 答案：a 8．传输路由 a. transmission path b. transmission quality c. binary transmission 答案：a 9．互联网 a. network resource b. Internet c. interconnected systems 答案：b 10． 命令 a. copy b. host c. command 答案：c 11． 拷贝 a. address b. mouse c. copy 答案：c 12． 搜索工具 a. user interface b. searching tools c. electronic mail 答案：b 13． 存取 a. access b. protocol c. copy