1.混合等体积 .006molcdot (L)^-1AgN(O)_(3) 和 .004molcdot (L)^-1(K)_(2)Cr(O)_(4) 溶液制备溶胶,该胶量-|||-结构中的电位离子和反离子分别是-|||-A. (N{O)_(3)}^- ,^+ B. (Cr{O)_(4)}^2- ,^+-|||-C. (N{O)_(3)}^- ,^+ D. ({Cr{O)_(4)}^2+ ,^+