题目内容
（请给出正确答案）
A.溶剂水被认为是只提供介电常数(D)的连续介质，完全忽略加入电解质后溶液介电常数的变化以及水分子与离子间的水化作用;
B.溶质完全离解成离子;
C.离子间的相互作用只有库仑力，而其他作用力都忽略不计;
D.离子是带电的硬球，电荷不会被极化，离子电场球形对称。
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A．that
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