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美国登山爱好者在一座峡谷攀岩时，因右臂被石头压住被困5天5夜，为了逃生，他强忍剧痛，花了一个多小时的时间，先后将桡骨和尺骨折断，用自己的运动短裤当作临时止血带，然后用小刀从肘部将右前臂硬生生切断。从岩石下脱身后，为了与失血抢时间，他以超人的毅力爬过狭窄和风力强劲的峡谷，缘绳下到60英尺深的谷底，再步行5英里后与营救人员相遇，终于成功生还。只是，爱丽丝早就过了修炼国术的黄金年龄，国术大师亦是她国术之路的终点。In the process of forging rst messages, the ip address and port number of the server side are known. Attackers also need to try to obtain the ip address and port number of the client side and make the sequence of rst messages within the receiving window of the server. If the attacker and the attacker are in the same intranet, this information can be obtained through spoofing and sniffing.The Liskov Substitution Principle (LSP) is one of the basic principles of object-oriented design. The Richter substitution principle says that wherever a base class can appear, subclasses can certainly appear. LSP is the cornerstone of inheritance reuse. Only when derivative classes can replace base classes and the functions of software units are not affected can base classes be truly reused, and derivative classes can also add new behaviors to base classes. The Richter substitution principle is a supplement to the "open-close" principle. The key step to realize the "open-close" principle is abstraction. The inheritance relationship between the base class and the subclass is the concrete realization of abstraction, so the Richter substitution principle is the specification of the concrete steps to realize abstraction. --From Baidu刘井儿舔舔嘴唇。?　　Tim Roth主演的新剧#Tin Star##双面警长#确定英国方面9月7日播出，故事发生在加拿大一个偏远的山区小镇，由于这里成为石油开采地，外来人口不断增多，一些违法犯罪分子也来到此地，犯罪率不断攀升，就连吉姆·沃斯警长（Tim Roth饰）也沦为暴力事件的受害者，家庭遭受重创，随后他走上了自毁的道路，想要复仇...