24. 青銅是何種金屬和銅的合金?
(A)Ag
(B)Sn
(C)Au
(D)Ni
答案:登入後查看
統計: A(12), B(127), C(5), D(34), E(0) #2709883
統計: A(12), B(127), C(5), D(34), E(0) #2709883