题目内容：
方波信号电压应从信号源的哪个输出端输出
A.只能从“功率输出”端口输出
B.只能从“输出A”端口输出
C.“输出A”和“功率输出”两个输出端口都可以
D.以上
参考答案：
选择题：方波信号电压应从信号源的哪个输出端输出：
- 题目分类：中国大学MOOC慕课
- 题目类型：选择题
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