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1. The product life cycle includes introduction period, growth period, maturity period and recession period.蒲俊也是一惊，不过他素来知道公子的神奇之处，奉命照做就是了，有些事不需要问的太清楚。特警队突然接到炸弹通知，在康城，一场席卷全城的炸弹危机正悄然蔓延。特警队长梁成虎临危受命，带领队员解决一系列恐怖袭击案件后，发现事情真相似乎没有那么简单，在一番抽丝剥茧后，梁成虎恍然大悟，在城市中布下炸弹的正是十年前抢劫金店的劫犯，而在城市中布满炸弹，则是打着复仇的幌子，蓄谋抢劫艺术馆。为了保护人民财产，梁成虎挺身而出，带领潘骁、甄勇、庞猛等特警队员，与歹徒斗智斗勇，争分夺秒的抢救陷入危机的城市，最终迎来胜利曙光。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 BaiduReporter: What is the description of your marriage?凯南·朗斯代尔(《爱你，西蒙》《闪电侠》)、迪伦·斯普罗斯(《小查与寇弟的顶级生活》)、萨拉·海蓝德(《摩登家庭》)将主演LGBTQ题材爱情喜剧片《我的假男友》(My Fake Boyfriend)，狮门和Buzzfeed出品。罗丝·崔奇(《拉字至上》)执导，讲述一个年轻人(朗斯代尔)在最好的朋友(斯普罗斯)的建议下，创造了一个假的社交媒体男友，来让糟心的前任远离自己的生活。而当他遇到了生命中的真爱，这个计划事与愿违：事实证明要和他的假男友分手真的很难。　该片下个月在加拿大开拍，计划在明年6月同志骄傲月期间北美上映。讲述性格挑剔的爱豆男主和平凡女主一起在飞机漂流途中坠落到无人岛后发生的故事。