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问题详情

通用示波器可观测（）。

A、周期信号的频谱

B、瞬变信号的上升沿

C、周期信号的频率

D、周期信号的功率

时间：2021-07-17 23:35 关键词：测绘工程专升本 GPS测量原理及应用 2019级第三学期期末考试

答案解析

C

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