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For interface programming, a lot of changes that may occur in the system in the future can be isolated. Why? If the code is written for an interface, he can implement the interface with any new class through polymorphism. However, when the code uses a large number of specific classes, once new specific classes are added, the code must be changed. Violating the opening and closing principle.Enjoy Yuan Mode:情急之下，黎章也不像之前那般口若悬河，卡住了。《钟馗传说》由四个故事组成，分别为《降妖杀虎镇》《公主三世情》《除魔无情斩》《天使也有恨》——《降妖杀虎镇》故事中，钟馗奉命下凡捉妖，却发现百姓心目中英勇清廉的捕快程门雪不仅被狼妖附身，而且疑似武大郎的后世；《公主三世情》讲述的是钟馗为保玉帝六公主和魔界鹏王子的三世情缘，时光穿梭到两人前世，上演了一段搞笑神话版的梁祝传说；《除魔无情斩》中，钟馗联合民间青天为苦命女伸冤，负心汉被铡后则变成了疯狂的驴头魔；《天使也有恨》讲述的是类似“窦娥冤”的故事，其实是冰雪女神为了复仇走上了不归路，导致人间六月飞雪。本片围绕时尚品牌古琦（Gucci）的第三代接班人毛里奇奥·古琦（Maurizio Gucci）的故事展开，毛里奇奥是古琦创建人古琦欧·古琦（Guccio Gucci）的孙子，1995年被一个西西里岛的年轻人枪杀于米兰办公室的楼梯上，他的妻子Patrizia Gucci因策划杀夫一案而被判入狱29年。他不明白，尹旭是如何笼络这些秦国人的……突然之间他想起当年在彭城，尹旭曾经奉命去上蔡安葬李由，那可是李斯之子啊。The term "fire protection technical service practitioners" as mentioned in these Provisions, It refers to the professional and technical personnel who have obtained the qualification of registered fire engineers in accordance with the law and practiced in the fire technical service institutions, as well as the general operators who have obtained the professional qualification of the corresponding special types of work in the fire industry in accordance with the relevant provisions and are engaged in the maintenance and testing of fire facilities in the fire technical service institutions.