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测试什么人啊。This is the increasingly mainstream concept of learning science: starting from "situational learning" and being a "cognitive apprentice", its main points are as follows.有些不自在，眼神闪烁，小声道：早些定了好。Https://medium.com/red-team/dde-payloads-16629f4a2fcd红椒和紫茄又盯着一箱子竹制品移不开眼了。The host is the most important. People input data to the host computer through keyboard, mouse and other input devices. After data processing by the host computer, the results are output to us through output devices such as displays and printers. The main components of the host include: memory, hard disk, motherboard, graphics card, sound card, optical drive, floppy drive, etc. Now many graphics card-like components can be integrated into the motherboard. CPU is also called central processing unit. CPU is the abbreviation of Central Processing Unit in English. As important as people's brains. It directs and dispatches all the work of the computer. Usually we refer to the CPU model when we say Ben 2, Ben 3 and Ben 4.