34 圖示週期性電壓波形之波形因數(Form factor, FF)約為何?
(A) 1.21
(B) 1.11
(C) 1.0
(D) 0.9
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統計: A(10), B(56), C(25), D(7), E(0) #3792527
統計: A(10), B(56), C(25), D(7), E(0) #3792527