問題詳情
29. 脈波頻率為 2kHz，脈波寬度時間為 0.3ms，工作週期為？
(A) 60%
(B) 50%
(C) 40%
(D)20%
(A) 60%
(B) 50%
(C) 40%
(D)20%
參考答案
無參考答案
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