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Four, the test point placement positionMaster Control End: The master control end is some hosts illegally invaded and controlled by attackers. These hosts also control a large number of proxy hosts respectively. Specific programs are installed on the master host, so they can accept special instructions from attackers and send these commands to the proxy host.Modern equestrian sports originated in England and were introduced into Europe in the 16th century. The 2nd Olympic Games in 1900 was included in the competition. Equestrian events are divided into dressage, obstacle surmounting and three-day events, each of which is divided into team and individual events.Basically, the interpreter pattern is used to make various interpreters, such as interpreters for regular expressions, etc.张大栓两口子更是眼不错地盯着大孙子和大孙女，生怕一眨眼他们就走了。` ` ` ` ` ` `In fact, employees, experiences and students describe a role, for example, a person who is a "manager" must be an "employee". In the above design, a person cannot have multiple roles at the same time, and if he is an "employee", he can no longer be a "student". This is obviously unreasonable, because many on-the-job graduate students, even employees, are students.