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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).Alin Sumarwata饰演Gracie Novin，聪明﹑真诚﹑诚实到率直的她是队伍的灵魂所在；Daniel MacPherson饰演Samuel Wyatt，酒吧哲学家的他是个独狼，幷没有与别人组队的打算。Roxanne McKee饰演来自军人家庭的Natalie Reynolds，擅长心理侧写及找寻对手弱点，不过她可能对自己的错误懵然不知；Warren Brown饰演绰号Mac的Daniel Macallister，守信用﹑友好﹑强壮的他，是在为自己失去的队友报复而战。Power Up -- Red Velvet郑氏眼中酸涩，微微点头道：放心，你爹已经过去了。3.2 Turn on and off the event schedulerJIT emphasizes to continuously strengthen and deepen on the existing basis, continuously carry out quality improvement work, and gradually realize the goals of zero defective products, zero inventory and zero waste.该剧以诚信为主题，带有喜剧元素，讲述了一个关于诚信的故事。围绕着两个家庭的两代人在家庭、工作、生活中所面对的一系列困惑和矛盾展开，讲述了当代年轻人与老年人在面对选择时的不同价值取向，引发了人们对社会上一些真善美与假恶丑现象的思辨与思考，发人深省。