重构试卷相关内容

TechHelper.Server/Services/IQuestionService.cs

@@ -0,0 +1,11 @@
+using Entities.Contracts;
+using TechHelper.Services;
+
+namespace TechHelper.Server.Services
+{
+	public interface IQuestionService : IBaseService<Question, Guid>
+	{
+		Task<ApiResponse> FindByTitle(string title);
+		Task<ApiResponse> CheckTitlesExistence(IEnumerable<string> titles);
+	}
+}