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"Teacher, when I synthesize crystals, I need to find different conditions to synthesize them, but there are too many tests. Do you have any better methods?" "What do you synthesize crystals for?" "Of course, it is to test its performance." "Then why do we stick to the need to synthesize crystals before testing properties? We can test properties with the results of each time. Maybe we can find better substances, can't we?" "Ah! Yes, thank you, teacher, I'll try it!" In an exchange with Mr. Sun Yimin, the teacher proved once again the correctness of the sentence "Don't stick to books and documents" while solving the problems of the team members.他心知不好，刚想翻身起来，只见一柄钢刀当头落下，迅猛得如同闪电，令他肝胆欲裂，本能地滚向一旁。蒲俊啊。他家多的是鸡，有的是鱼，可他好久没吃了。So far, the event has been processed. The next step is to set the event attribute to null and put it into the event pool. Determines whether persistent has been forced to be called, and if not, releases the event object.3. Psh and ack flood attack