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B) Design principles. Many people have listed seven principles, such as single duty principle, opening and closing principle, Richter substitution principle, dependence inversion principle, interface isolation principle, composite reuse principle and Dimit principle. LSP, I elevated it to one of the three cornerstones of the object-oriented paradigm; Single responsibility and interface isolation are mainly used as the principle of responsibility division in object-oriented analysis/OOA, which you can not pay much attention to at this time. Relying on the inversion principle, I throw it away as garbage, because the opening and closing principle or directly "relying on abstract type principle" already contains the essence of relying on the inversion principle, while the dross of relying on the inversion principle is inherited by IoC. Of course, the pullback, I emphasize very much. Therefore, you need to master the abstract dependency principle (OCP), one-way dependency principle (including the learning of callbacks) and the minimum dependency principle (composite reuse principle, Dimit rule).李时珍发现当今世上的医书错误连连漏洞百出，于是起了编撰《本草纲目》的念头。然而，他却因为个性过于耿直而得罪了权贵，使得他不得不暂时中断了医书的编撰，还性命不保踏上了逃亡的旅途。所幸有太医院的庞宪（马国明 饰）一路帮助扶持，李时珍终于完成了旷世奇作《本草纲目》。　　四大版块《“乐”见新鲜》为新闻资讯；《“乐”见榜样》是榜样人物专题片；《“乐”暖人间》平凡人音乐故事的的Vlog展示；《越短“乐”精彩》是新鲜、正能量的短视频集锦。连小葱也扑哧一声笑了。被丐帮众人追杀，这是赵敏意料之中的事，但是赵敏没有料到，张无忌会突然出现，而且还救下她。A documentary show about troubled girls who are are juvenile delinquents in Madison Juvenile Center3. Reflection and amplification attack (DEDoS) (ack reflection attack, dns amplification attack)