46 下列何者為鋅銅電池正確的陰極反應？
(A)Zn→Zn2++2e-
(B)Cu2++2e-→Cu
(C)Cu→Cu2++2e-
(D)Zn2++2e-→Zn

答案：登入後查看
統計： A(6), B(40), C(4), D(10), E(0) #2369679