/// <summary>
/// 查询数据
/// </summary>
/// <param name=”accountno”>帐套号</param>
/// <param name=”sql”>SQL语句</param>
/// <returns>查询到的数据</returns>
/// <summary>
/// 查询数据
/// </summary>
/// <param name=”accountno”>帐套号</param>
/// <param name=”sql”>SQL语句</param>
/// <returns>查询到的数据</returns>
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