change

TechHelper.Client/Exam/Exam.cs

@@ -32,7 +32,7 @@ namespace TechHelper.Client.Exam
 		[JsonProperty("题号")]
 		// XML 特性：作为 <QG Id="X"> 属性
 		[XmlAttribute("Id")]
-		public string Id { get; set; }
+		public byte Id { get; set; }
 
 		[JsonProperty("标题")]
 		[XmlElement("T")] // T for Title
@@ -60,9 +60,10 @@ namespace TechHelper.Client.Exam
 	// 子题目类
 	public class SubQuestion
 	{
+
 		[JsonProperty("子题号")]
 		[XmlAttribute("Id")] // Id for SubId
-		public string SubId { get; set; }
+		public byte SubId { get; set; }
 
 		[JsonProperty("题干")]
 		[XmlElement("T")] // T for Text (Stem)