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Hardware Environment (Hardware Environment) and its peripherals constitute a computer physical system. That is, hardware facilities refer to the environment constructed by the sum of the material and physical conditions needed for communication activities.历史学家和考古学家深入到世界上最古老城市的地下，探索其中的秘密空间和奇珍异宝。他们把你前所未见的古代世界，呈现在你的面前，探索一座座神秘古城。但是实际的拍摄过程，却是相当无聊，只见两个人比划来，比划去，嗯，还有周围围着的一群人，以及指指点点、喋喋不休的导演。张大栓也不住地拿头撞拦住他的军汉，却被狠狠推倒，山芋扑过去喊爷爷。< script type= "text/javascript" >这样的做法最为直接，却也最为夜晚，不得不承认的是避免了夜长梦多，效果是最好的。Est (2, true, 500); This method does not match from the first node order500 in the chain, returns the success string, and then this.success & & this.successor.passRequest.apply (this.success, arguments); Execute this code; As we said above, the attribute this.Successor refers to two methods, order200 and orderNormal, so the method order200 is called, so the value is returned, and so on. Then if we want to recharge 300 yuan's red envelopes in the future, we can write the function Order300, then list the chain chain and package it, and specify the order in the responsibility chain. The business logic inside does not need to be processed.