【判断题】【消耗次数：1】
滤波电路（滤波器）是一种选频装置，可以使信号中特定的频率成分通过，而极大地衰减其他频率成分。
①
正确
②
错误
参考答案：
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相关题目
【单选题】
用一个截止频率为w1的低通滤波器和一个截止频率为w２的高通滤波器，构成一个带通滤波器，应当使（）。
①
二者串联，并且w1w２
②
二者并联，并且w1w２
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二者并联，w1w２
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二者串联，w1w２
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At 8:00 am
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Fine, thank you.
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