Method Of Renewing Degree Of Difficulty In E-learning System Of Providing Question By Degree Of Difficulty And E-learning System Of Providing Question By Degree Of Difficulty With Renewing Degree Of Difficulty In Real-Time,申请号KR20070135821-传众专利搜索

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发明名称	Method Of Renewing Degree Of Difficulty In E-learning System Of Providing Question By Degree Of Difficulty And E-learning System Of Providing Question By Degree Of Difficulty With Renewing Degree Of Difficulty In Real-Time
摘要
申请公布号	KR100922365(B1)	申请公布日期	2009.10.19
申请号	KR20070135821	申请日期	2007.12.21
申请人		发明人
分类号	G06Q50/20	主分类号	G06Q50/20
代理机构		代理人
主权项
地址

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