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The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From Baidu
2029
The banking industry has adopted a certain degree of cooperation mechanism when attacked. All information they disclose will be strictly protected and will only be shared with their internal counterparts. This collaborative approach, which combines restrictive mechanisms, enables the banking industry to perform better than most other industries in terms of safe collaboration.
(1) Application Form for Qualification of Fire Protection Technical Service Institutions;

同时他们也希望越国能够尽快再有大步前进,尤其是李斯,他的年纪大了,不知道还能有多少寿命。
玉米还是少年,心智也不如大苞谷坚定,万万不能相逼,恐适得其反。
AppleTV+未播先续订《#天黑请回家#HomeBeforeDark》第二季

男主是澳门富商,女主是医生,初次见面男主受伤失忆,女主将其带回家悉心照顾,两人互生情愫。后来男主被手下找回,记忆恢复却忘记了女主…总之是一部集黑帮、失忆、各种谜团于一身的爱情故事。
Only events created in the current library can be viewed through show events
中学三年级佐由理转学到东京。两位少年放弃了制造飞机的打算。浩纪考进东京的高中,拓也继续留在青森的高中就学,彼此在各自的道路上越走越远。
18岁的平凡女生杉菜考入理想大学却与同学们格格不入。学校里有四个外形阳光帅气,家境富裕的学生:道明寺,花泽类,西门和美作。仗义的杉菜与道明寺产生了争执,两人的误会加深。但杉菜凭借其杂草般顽强的生命力逐渐改变了这四个男生对其不好的印象,道明寺也因为在恶作剧杉菜的过程中爱上了杉菜......
剧《别活得太累》是一部富有生活气息和时代感的轻喜剧。这部戏的主题是严肃的,而它撷取的生活素材是丰富多彩的,编织故事的手法是轻松幽默的。中主人公各家和整个小区组成了本剧的生活空间,他们之间相互联系,相互感召,相互映衬,最后使各家的成员们殊途同归,汇入了健康生活的洪流,进一步揭示了“我们健康的社会需要由健康的人和健康的人性来组成”这一深刻的主题。
Updated April 4


上世纪九十年代,北京什刹海边槐树胡同一个普通的小四合院,住着老牛一家三代,老两口牛德山和周二玲,大儿子牛建国和儿媳金梦瑶,二儿子牛建军、儿媳杨雨彤和小孙子牛中天,还有小女儿牛建红。这一家人历经了风风雨雨、磕磕绊绊,聚散离合之后,还是那一份浓的化不开的牵挂,将全家人紧紧地聚合在一起。大儿子牛建国是名汽车装配工人,为人忠厚坦荡,是个孝敬父母、关心弟妹,疼爱老婆的好男人。牛建国和曲艺演员金梦瑶结婚几年也未能有个一儿半女,这不仅成了他的心头大患,也是老牛家的一大遗憾。为了能怀孕,尝尽了各种办法,婆婆周二玲还不惜花大价钱买偏方给儿媳治病,结果还是没有动静。金梦瑶还怀疑婆婆的药是否可靠,使得本来就紧张的婆媳关系进一步僵化。
7. After the plane flies, it can look down at the earth as if it were in the sky.
  二十年监狱生活已使苇子对这座城市陌生,他找到昔日的同伙,眼下正做房屋中介生意的陈再勇。经陈再勇介绍,苇子找到走私枪犯蔡大头,从蔡手买了一把枪。苇子像幽灵一样出没在这座城市之中。为转移视线,他先后有选择地杀了他的仇人。在互联网上看到通缉令的警方,在虎超指挥下,在全城范围内搜捕苇子。