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大苞谷听了不敢相信地问：娘。Standard Answer: Flight Control, Civil Aviation, Public Security1. Policy propaganda: 'Difficulty in attending school, high cost of medical treatment and difficulty in obtaining employment have always been the three major livelihood problems. In recent years, the government has taken many measures to solve these three major problems and achieved attentive results. However, due to the lack of sufficient information on this aspect and the lack of comprehensive understanding of relevant policies, many farmers cannot use these policies to safeguard their rights and interests. We hope that through such an opportunity, we can do our best to help our farmers. The main policies to be publicized include 'rural medical insurance', 'old-age insurance', 'family planning subsidy', 'subsidy for benefiting farmers', 'nine-year compulsory education free policy', etc.　这是一个关于爱与背叛的故事，讲述一对三十多岁的中产阶级夫妻，当他们开始对其他人产生欲望，两人的性关系开始变得紧张。1999年，澳门回归中国前。澳门司警马振成（杜汶泽饰）因惹上是非遭停职，警察生涯即将终结。马振成与伙计仍然夜蒲，盲打误撞遇上一名神秘少女张碧欣（梁洛施饰）。张碧欣随之跟着马振成回家，醉酒醒来的马振成以为自己与对方有了一夜情，再加上碧欣声称是他与初恋情人分手后生下的女儿，更加令马振成错愕不已。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: