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《我的美女老师》改编自网络热门修真玄幻同名小说，是一部结合了校园青春和修真玄幻的轻喜剧风格网络剧。讲述的是大学毕业的秦朝，偶得魔神附体，无意中救了身份神秘的大学老师苏姬，从而打开了他的修真之路，成了苏南大学的保安，发生了一连串的奇遇，不断拥有了各种修真法力，收获了和苏姬老师的爱情，奇遇、夺宝、天生魔体，校园故事，奇遇连连•偶像剧的面孔，青春剧的浪漫，玄幻中又不乏诙谐，堪称都市修真剧里的经典之作。This method requires the salesman to directly target the customer's main purchasing motivation, directly sell to him, beat him off guard, and then "take advantage of the situation" to persuade him in detail. Please look at the following scene: the doorbell rang and a well-dressed man stood on the steps of the gate. When the master opened the door, the man asked, "Is there a high-grade food mixer in the house? "The man was shocked. This sudden question left the host at a loss as to how to answer. He turned to discuss with his wife, who was a little embarrassed but curious and replied, "We have a food mixer in our house, but it is not particularly advanced. "The salesman replied," I have a senior one here. "He said, and took out a high-grade food blender from his bag. Then, it goes without saying that the couple accepted his promotion. If the salesman changes his way of speaking, he will say, "I am a salesman of X Company. I came to ask if you are willing to buy a new food mixer. "Do you think about the marketing effect of this kind of talk?Diamond Sweetheart's doll socks, which I just bought recently, like that everything in their house has its own logo. It doesn't feel soft, but this pair of socks is easy to hook and break, but are there any super cute ones?Well, it's this simple and crude.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:PS: Many forums have seen beginners ask whether WCF still needs to learn in depth, because they think these technologies may be outdated. Maybe Microsoft will launch a new SOA implementation scheme at that time. Wouldn't it be a waste of time to learn in depth, so they feel that there is no need to learn in depth and just know how to use them. I had the same feeling about this problem before, but now I think that although WCF technology may be replaced, the key to understanding a technology in depth is not to know some more advanced API calls, but to understand its implementation mechanism and way of thinking. Even if the latter technology is replaced, the mechanism behind it is definitely similar. Therefore, if you have a thorough understanding of a technology, you will feel familiar with the new technology and relaxed about it. In addition, after you have a thorough understanding of a technology, you dare to say that you have mastered the technology well during the interview, instead of saying that you use it a lot at ordinary times. Once you ask deeply, you do not know the implementation principle behind it. This is also why I want to write WCF series. I hope this opinion is helpful to some beginners.《玛嘉烈与大卫》的故事继续发展之前，先乘坐时光机，回到过去，看看玛嘉烈和大卫在遇上对方之前，爱了什么人、害了什么人、撒过什么谎、躺在谁的怀里...