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算上秦淼，这已经是第二次了。Compared with the example of electric lights, file uploading differs in that it will now face more complicated conditional switching relationships. In the example of an electric lamp, the state of the electric lamp is always from off to on and then to off, or from off to low light, low light to strong light, strong light to off. ABCA always seems to follow the rules, so even if you don't use the state mode to write the light program, but use the original if, else to control the state switching, you won't lose yourself in logic writing, because the state switching always follows some simple rules.韩信知道他的心愿。< script type= "text/javascript" > $(document). Ready () {Reflective attacks typically use protocols that do not require authentication or handshake, The reflection attack needs to forge the source ip address of the requested data into the ip address of the target. If the protocol used requires authentication or handshake, the authentication or handshake process cannot be completed and the next attack cannot be carried out. Therefore, most reflection attacks are carried out by network services based on udp protocol.However, there is actually another way to make the delegate execute the method, and that is: delegate variables (parameter lists)差不多就好了。