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嬴子夜北上上郡祭奠过扶苏之后，已经回到关中和姑姑以及尉缭等人待在一起，准备择机前往越国和尹旭相会。C) Initial understanding of UML. This is a tool for learning design patterns. In the early days, you could even only know the relevant diagrams of BlueJ, which took 10 minutes.At this time, it is necessary to consider whether the new activity is opened in the same task stack as your own App or in the new task [this is very important because in Android mechanism: the life cycle of the activity in the same task stack is associated with this task [see below for specific examples]], and then consider the startup mode of the activity; Therefore, Android provides a higher priority setting method in Intent.setFlags (int flags), through which you can set the task stack and startup mode for opening the activity in the third-party App, and look at the source code for the specific settings.With the development of CSRF vulnerability research, there are some special tools for CSRF vulnerability detection, such as CSRFTester and CSRF Request Builder.Suppose the attacker is in an "interconnected" network (e.g. An Autonomous system? System), whose ISP restricts the input and output filtering of the attacker's network traffic, will be able to prevent this spoofing attack-if this method can be deployed to the correct location by the organization. This defense method of traffic input and output filtering will restrict some legitimate communications, such as the mobile IP triangular routing operation mode, so it cannot be widely deployed. IP Security Protocol (IPsec) also provides an excellent way to resist spoofing packets, but this protocol cannot be used due to deployment restrictions. Since it is usually impossible for the server side to require the ISP of the link initiator to implement address filtering or require it to use IP security protocols, more complex solutions are needed to resist this spoofing attack disguised as multiple addresses, which will be discussed later.