A second order low-pass filter has a high-end roll-off of（）.
A.60 dB/octave
B.40 dB/decade
C.20 dB/octave
D.6 dB/decade
正確答案：40 dB/decade
題目：A second order low-pass filter has a high-end roll-off of（）.
關鍵字：智慧樹
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