問題詳情
227. 如圖電路中，若 CP 輸入頻率為 1kHz，則 f0 輸出信號頻率為
(A)2kHz
(B)1kHz
(C)500Hz
(D)250Hz。
(A)2kHz
(B)1kHz
(C)500Hz
(D)250Hz。
參考答案
答案：C
難度：適中0.5
統計：A(0),B(0),C(0),D(0),E(0)
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