题目内容：
Digital data can be produced by all of the following expect ().A.a voice
B.a computer
C.a radio-wave
D.a visual signal
参考答案：
选择题：Digital data can be produced by all of the followi
- 题目分类：河南师范大学-计算机科学与技术-专业英语
- 题目类型：选择题
- 查看权限：VIP
A.a voice
B.a computer
C.a radio-wave
D.a visual signal