Code as above; Write three functions of order500, order200 and orderNormal respectively, and process their own business logic in the functions respectively. If their own functions cannot be processed, they will return the string nextSuccessor to pass it back, then encapsulate the constructor Chain, pass an object fn into it, and have their own attribute Successor. There are two methods setNextSuccessor and passRequest on the prototype. The method setNextSuccessor specifies the order of nodes in the responsibility chain, and saves the corresponding method to the attribute this.Successor, chainOrder500. SetNextSuccessor (chainOrder200); ChainOrder200. SetNextSuccessor (chainOrderNormal); Specifies the order in the chain, so this.Successor references the order200 method and the orderNormal method, so if chainOrder500.passRequest (1, true, 500) is called for the first time, the order500 method is called, output directly, and chainOrder500.passRequ is called for the second time.
Editor's comment: The BMW 3 Series has a total of six generations of models since its development. The good reputation and mature design of the previous generation of models make the new BMW 3 Series not need to innovate the overall chassis structure, which is also the accumulated result of the BMW 3 Series over the past 40 years. The overall structure of the new BMW 3-Series chassis makes it worthy of the title of the same control benchmark. Compared with this, what makes people feel more valuable is the emphasis on chassis details of the new BMW 3-Series, and it is this spirit of pursuing perfection that enables the BMW brand to have a strong foothold for a hundred years.
胡敦气得浑身颤抖，却说不出话来。
重案组布网围剿国际毒枭，突然杀出一组蒙面悍匪“黑吃黑”，更冷血屠杀众警察。重案组督察张崇邦（甄子丹 饰）亲睹战友被杀，深入追查发现，悍匪首领竟是昔日战友邱刚敖（谢霆锋 饰）。原来敖也曾是警队明日之星，而将敖推向罪恶深渊的人，却正是邦。宿命令二人再次纠缠，一切恩怨张崇邦如何作出了断……
故事发生在东北农村。剧中表现了农民在改革大潮冲击下离开黑土地进城打工，给农民带回了新思想，新文化，新技术。在党富民政策的鼓舞下一些农民又回归土地的心迹变化。真实的反映出农民在社会环境中城市反哺农村，农民一心一意奔小康的清明上河图景象。
Press the G key to deploy the landing gear.
付宇锋高兴道：小鱼儿太厉害了。
男人为什么总是不懂女人心？以怎样的方式相爱，才是长久的浪漫呢？ 故事1：晟烨因为患有阿茨海默症而不记得爱人马萧萧是谁，他抹去了关于马萧萧所有的记忆。于是，马萧萧在几十年的爱情长河中，一次次陪伴患病的晟烨重新演绎当初的邂逅，努力地让他记起自己。在这场跨越了几十年时间的爱
张槐沉吟了一会，起身去后面，把这事告诉了郑氏。
《在你视线停留的地方》讲述了18岁的少年泰柱和国义的兄弟罗曼史。在剧中，韩基燦将饰演财阀家族的独一无二的继承人，公认的皇室家庭拥有魔性魅力的泰柱一角。张义秀则将饰演拥有健壮体格，无论何时都守护在泰柱身边的朋友兼贴身保镖的囯义一角。
湖南卫视宣布刘欢、齐豫、杨坤、吴青峰、逃跑计划组合、张芯成为《歌手2019》首发阵容。
"What, T-shirt, skirt and bag are just the same, miss, please wrap them up."
《迷宫行者》讲述了男孩托马斯（Dylan O’Brien 饰演）醒来时发现自己身处一个由巨石组成的巨大迷宫Glade中，他只记得自己的名字，其他一切记忆全都失去了。和他一样在这个迷宫中的还有一些孩子，他们也同样不记得自己是怎么到这里的。每天早晨迷宫的大门会被打开，而到了晚上就会关闭，迷宫中有一种可怕生物叫做Grievers。每隔三十天，就会有一个新的男孩到来，但令人意外的是，在托马斯之后来的却是个女孩，她带来了令人惊讶的讯息：只有托马斯才能带领大家走出迷宫，而前提是托马斯必须首先解开埋藏在他记忆深处的黑暗秘密。
《哪咤降妖记》以经典神话传说为蓝本，讲述了陈塘关将军之子哪咤与东海公主小龙女共同携手斩妖除魔、破解邪恶力量的神话冒险故事。
3. Psh and ack flood attack
It is a wood carving shot by spot metering and illuminated by light.
胜利集团老总乔胜利的儿子乔晓东过生日，同一天生日的维修工刘成无意中带走了一份重礼，因此锒铛入狱。出狱后的刘成适逢农村家中变故，父亲重病不起。刘成因此对乔胜利充满了仇恨，开始酝酿报复乔胜利、夺取乔家财富。刘成冒充外交官的儿子混入上流社会，他偶然认识了王若萱并爱上了她。一次游玩中刘成救了乔晓东，他得以进入胜利集团工作。乔晓东和王若萱十分投缘，两人很快相爱，暗恋着王若萱的刘成心中充满了嫉恨。刘成暗中调查乔胜利的污点，并将证据透露给乔胜利想以此敲诈，不料乔胜利对此不屑一顾，却把刘成提拔到总部工作。刘成招待客户时在歌舞厅碰到了妹妹险些暴露身份，刘成为掩盖身份竟以暴力威胁妹妹回老家。王若萱的父亲王大洪为加入胜利集团，拉拢刘成为他们工作，心机狡诈的刘成反将王大洪当成了自己打击胜利集团的棋子。他利用王大洪同乔胜利的情敌关系打击乔胜利，并为王若萱和乔晓东的感情设置障碍。乔胜利忽然发现乔晓东不是自己的亲生儿子，原来乔晓东是当初抱错的农民的儿子，自己的儿子在那里？乔胜利陷入了苦苦寻找之中。乔晓东瞬间一贫如洗，
The observer mode defines a one-to-many dependency relationship, allowing multiple observer objects to monitor a certain topic object at the same time. When the state of this topic object changes, all observer objects will be notified so that they can automatically update their behaviors. The specific structure diagram is as follows:
