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If I were to implement a pizza ordering system, I would definitely write the code like this, because this kind of code can be written subconsciously without consuming our brains. However, take a closer look at this code: the purpose of this method is to order pizza. However, the code for ordering pizza also needs knowledge about the production of pizza. This method must know all pizza. Worse still, if the types of pizza are to be expanded or pizza with poor sales volume are to be deleted in the future, then the code for ordering pizza will be modified. It looks very bad and should be revised. Our first step must be to separate the code for producing Pizza from the code for ordering pizza, because you should not let the code for ordering Pizza know the logic for producing pizza, but should hand over the logic for producing Pizza to a special type. In this way, we can cope with future changes-if we want to add or delete pizza, we can directly modify the producer of pizza without affecting the logic of ordering pizza.First, how to open the mode and what is the fast mode?　　广清暂时收留美智了，但个性大相迳庭的两人摩擦不断，却渐渐在摩擦中产生了情愫。直到追求美智的土豪老板的出现…膏药哥、大力、二呆，逗逼三兄弟满怀壮志开了一家借贷公司，想以此赚大钱。清纯少女赵佳妮，热爱唱歌，热爱表演，从小就梦想成为歌手。偶然机会参加歌手比赛，单纯的她听说可以花钱买选票，但赵佳妮没有钱。这时赵佳妮看到了一则借贷小广告，便想借钱买选票。借贷是需要抵押的，赵佳妮没有可以抵押的东西。公交车上她偶遇被人追堵的马天翊，在马天翊的配合下，向膏药哥三兄弟借到了钱。膏药哥三兄弟发现被马天翊骗了，找到赵佳妮，威逼利诱想要回借给她的钱，由此发生了一系列乌龙事件。Reason for Choice: Mini Yang is the only woman among the four options.User2 exe!The "Special Provisions on Labor Protection for Female Workers" clearly stipulates that for female workers who are pregnant for more than 7 months, the employing unit shall not extend the working hours or arrange night shift work, and shall arrange a certain rest time during the working hours. Pregnant within 7 months, can be arranged, but the employer is advised not to arrange as much as possible. In addition, employers are not allowed to extend working hours or arrange night shift work for female employees who breast-feed babies under the age of 1.