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Proportion of patients who obtained MDT diagnosis and treatment advice at MDT meetings.The sockstreet attack first completes the tcp three-way handshake the tcp connection is established, but in the last ack reply of the three-way handshake, the attacker sets its tcp window to 0 and then makes a data request. When the target discovers that the TCP window size at the receiving end is 0 when transmitting data, it will stop transmitting data and issue a TCP window probe packet to ask the attacker if its TCP window has been updated. Since the attacker does not change the size of the tcp window, the target will always maintain the tcp connection waiting for data to be sent and continuously carry out window update detection. If the attacker uses a large number of controlled hosts to carry out sockstreet attacks, the target will always maintain a large number of tcp connections and carry out a large number of window update detection, and its tcp connection table will gradually run out.Through the command line《镜文学惊悚剧场》集合了卓立、陈宏一、王威翔、刘邦耀、林冠甫、沉骐、李育丞7位导演，联手制作7部不同内容，但都紧紧扣着惊悚悬疑的故事。你看见的，不一定是你看见的。七个故事，窥探人性的幽暗深渊。《乐园》夫妻共赴神秘度假村，为了拯救爱情却救不了命《肇事者逃逸》设法逃出死亡回圈的求生罗生门《住户公约第一条》孤独孩童的家庭秘密，竟是一桩痛心惨剧《打扫》吞噬人的黑洞，是源自人性受倾轧而诱发的疯癫《虎》的挑衅、忌妒与占有，终将酿起残酷的复仇《隧道》追寻救赎而激荡出的爱，沾染毁灭的气味《完美Lily》对美好人生的向往，却是复制与贴上Is to create a factory class to create instances of some classes that implement the same interface. First, look at the following diagram:进城打工的王大春长得英俊潇洒，父亲英年早逝，母亲守寡一生，将其拉扯长大。王大春长的像父亲，而母亲则很丑，所以王大春从小就很怕别人知道他有一个丑娘。王大春打工时与同在一个酒店打工的漂亮城里姑娘赵小旭相识后，由于已父母双亡的赵小旭特别注重男友及其家人的相貌，再加上王大春对赵小旭特别细心的呵护，两个人相恋了，深爱赵小旭的王大春因为虚荣心和因为有个丑娘而几次被女友抛弃的经历，使他向赵小旭隐瞒了自己的家中有丑娘的事实，说他自己也是父母双亡……In real life, China's income tax is divided into enterprise income tax, foreign-invested enterprises or foreign-invested enterprises income tax and personal income tax. For these three types of income tax, each is calculated in a different way. Personal income tax has a personal income tax calculation method, while enterprise income tax has its corresponding calculation method. If we do not adopt the policy mode to realize such a requirement, we will define an income tax class, which has an attribute to identify the type of income tax and a CalculateTax () method to calculate the tax. In this method, we need to judge the tax type and calculate the income tax for different tax types through if-else statements. Such an implementation can indeed solve this scenario, but such a design is not conducive to expansion. If the system needs to add an income tax in the later period, it has to go back and modify the CalculateTax method to add an additional judgment statement, which clearly violates the principle of "open-closed". At this time, we can consider using the strategic mode to solve this problem. Since the tax method is the changing part of this scenario, we can naturally think of abstracting the tax method at this time, which is also the essence of the implementation of the strategic mode.