/// <summary>
/// 檢查指定的問卷題目實體是否為可作答題目
/// </summary>
/// <typeparam name="IdType">主鍵類型</typeparam>
/// <param name="question">問卷題目實體</param>
/// <returns>是否可作答</returns>
public static bool IsQuestion <IdType>(this IQuestion <IdType> question) where IdType : struct
{
var attr = EnumFactory.GetCustomAttribute <NotQuestionAttribute>(question.Type);
return(attr == null);
}