如果使用传统的数据库字段存储,在以后题型的变更以及扩展中必然要受到很大的局限,该论文研究设计的习题库是可扩展的,有多种不同的题型。比如,在传统的选择题型中,只能用文本存储,而现在,可为一道数学题目提供四个函数图像,还可为英语存储一些听力的音频,在选择正确的实验步骤中添加一段视频等。解决题型扩展,首先想到用xml格式存储信息,因为xml的特性是扩展性。xml中的“扩展”指的是定义新的标记及其用途的标准机制,本习题库通过定义新的标记来达到对传统题型的扩展。xml…

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文章写真实你棒极了。。。


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Fan Xiaoyan daily diet, treatment, care and nursing care are on, and the inspection of all drug costs are Dianzi to hospital.

□ newspaper reporter Qingquan Cong Jun-ru / map

】 【Core tips

Tomorrow is a new year. At this point, 26-year-old Fan Xiaoyan alone are lying in a hospital's emergency treatment room. Her husband has been missing for several days, accompanied by her baby was dead, only the fetus. A few days ago, more than 7 months pregnant the Fan Xiaoyan, a serious lung infection due to sudden respiratory failure, severe heart failure, and so on, in this life and death, her husband, Han Yonghai but she sent to the province after two hospital emergency rooms Left quietly. The doctor said no family members will not be able to meet for the further implementation of the treatment of critically ill patients.

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