修改前台页面对应的后台效果，新增学习记录的自然时间差

“djh”

2024-11-06 b56c3c0f1bc87935a8b59f6ee39f78b4796250ff

 exam-system/src/main/java/com/gkhy/exam/institutionalaccess/model/vo/ThStudyVO.java

@@ -7,4 +7,5 @@
    private String idcard;
    private String name;
    private Long duration;
    private String courseUuid;
}