29. 如【圖3】Y→ᇞ電阻值轉換,試求R1、R2及R3為何?
(A) R1 = 14 Ω、R2 = 28 Ω及R3 = 7 Ω
(B)R1 =30 Ω、R2 = 15 Ω及R3 = 8 Ω
(C) R1 = 8 Ω、R2 = 15 Ω及R3 = 30 Ω
(D) R1 = 14 Ω、R2 = 7 Ω及R3 = 28 Ω 
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統計: A(533), B(38), C(32), D(28), E(0) #2057481
統計: A(533), B(38), C(32), D(28), E(0) #2057481