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Although there are subclasses in java that implement the interfaces of the parent class, But I think javascript can be different from java, It is possible that the parent class in java is an empty class, Subclasses to implement the interface of the parent class, in javascript, I think the common code is completely written in the parent function. If the business logic needs to be changed in the future, or new business logic is added, we can completely use subclasses to rewrite the parent class, so the code has strong scalability and is easier to maintain. Since I am not a professional java, please understand if there is any mistake in describing the knowledge points in java ~ ~[3 sets of special training programs for the simplest strength lifting]Practical Experience: I got up at 5: 30 on the morning of the 12th, because I had to gather in front of the public health building at 6: 30. This was the earliest time I got up in my college life. It was really a challenge! But I understand that the challenge is just the same as ours. After getting up, washing and tidying up, I finished the breakfast prepared the night before and arrived at the gathering place on time. Although they got up so early, every player was full of passion and did not feel sleepy at all. The teacher arranged us to carry the necessary items such as banners, flags, leaflets, brochures, questionnaires, etc. to the car. We have one more player-the driver. After everything was ready, the driver and master drove to Shexian County. On the bus, the teacher sent everyone a questionnaire to familiarize themselves with the information. At the same time, the teacher divided our 14 students into two groups. As a result, every 2 teachers led 7 students to act separately, which improved the work efficiency. It was already over 1 p.m. when we left at 7 a.m. Since we have not driven to Shexian before, we only asked others about how long it will take us to arrive. We were not familiar with the road and encountered a traffic jam on the road, which made us arrive more than 3 hours later than planned. It's really that the plan can't catch up with the change! I got up early in the morning and ate less. At the moment, everyone's face showed a slightly tired expression, but my eyes were still full of passion. When we arrived, we all had lunch in a restaurant. In order to reduce too much consumption, we also had a simple meal. But we are already very satisfied, after all, this is not the purpose of coming. Coming, we will eat the bitter, doEason and The Duo band 在中环摩天轮举办的露天慈善show，歌单囊括了两个月后新砖的大部分歌曲，还有Yoyo的新歌《尽力呼吸》《人偶师》是一部由陈帅导演的最新悬疑探案类网剧，《人偶师》已于大连开机拍摄。 
　　“人偶”不难让人联想到牵线木偶，《人偶师》顾名思义任人摆布的木偶 ，此系列悬疑剧共有三季，目前开拍的是第一季，该剧颠覆了以往侦探剧的戏码，集探案、悬疑、阴谋、等多重元素于一身，讲述了一个专门负责抓捕危险 罪犯的小组SCI穿梭于各种阴谋暗战之中寻找事件的真相。2. Chain of responsibility model杨佳雪是星兴广告公司的顶梁柱，她的老总钱伟豪带着一束鲜花向她表达爱情，被她拒绝了。杨佳雪及其男友唐明，还有苏有伦是大学同学，唐明现在国外留学，苏有伦则和佳雪在同一家广告公司供职。生活似乎很平静，直到有一天，杨佳雪发现自己成了艾滋病毒的携带者…………