問題詳情

5Iron objects such as storage tanks and underground pipelines can be protected from corrosion by connecting them through a wire to a piece of:
(A) Pb
(B) Ag
(C) Sn
(D) Cu
(E) Mg

參考答案

答案：B
難度：困難0.217391
統計：A(1),B(5),C(7),D(4),E(4)