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严总督先收到的信，看过之后又封了回去，福建不归他管，转给北京。119. X.X.93MDT shall establish the following relevant feedback system:一千多年前，大燕慕容家被乱军追杀，慕容曦逃亡至禁地时，时空隧道打开，仆人王鹏为救主子而将他推进时光隧道，来到一千多年后的现代社会。为寻找复国之法，他误打误撞认识了饮品店顺宰一家人为了庆祝俊儿过百天，决定照张全家福。不过，顺宰这家人做什么事都不那么顺利！俊儿撒了一泼尿，顺宰和文姬争着要坐在前排座位，俊儿的父母民龙和申智只顾吵架，文姬和海美为了俊河的发型较劲儿。哎呀，顺宰一家人真是费了几番周折才照完了全家福。可顺宰又不满意全家福挂的位置……被分配到风坡高中任教的敏静怀着激动的心情走进了教室。不过，上课第一天，就被在同一个班念书的一对儿兄弟搞得不知所措。Liskov Substitution Principle, LSP (Richter Substitution Principle) means that subclasses must replace their parent types. In other words, in the process of software development, after the subclass replaces the parent class, the behavior of the program is the same. Only when the subclass replaces the parent class and the function of the software is not affected can the parent class be truly reused, and the subclass can also add new behaviors to the parent class. In order to look at an example of violation of LSP principles, the specific code is as follows:《绿皮书》该片改编自真人真事，讲述了意裔美国人保镖托尼，他被聘用为世界上优秀的爵士钢琴家唐开车。钢琴家将从纽约开始举办巡回演奏，俩人之间一段跨越种族、阶级的友谊的故事。