17 如圖所示之等效電路,下列何者為正確?
(A) R1 =
(B) R2 =
(C) R3 =
(D) R1 =
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統計: A(6), B(3), C(42), D(2), E(0) #2707647
統計: A(6), B(3), C(42), D(2), E(0) #2707647