117. 如圖所示,單切開關 OFF 時,E 、E 的電壓降分別為 
(A)E =12V、E =12V
(B)E =0V、E =12V
(C)E =0V、E =24V
(D)E =24V、E =0V。
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統計: A(0), B(5), C(2), D(54), E(0) #652159
統計: A(0), B(5), C(2), D(54), E(0) #652159
