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Specifically, in 2016, the proportion of product research and development categories such as CAD, CAE, CAM and CAPP in China's industrial software industry is about 8.3%, while the proportion of information management categories such as ERP, CRM and HRM is about 15.5%. Production control categories such as MES, PCS and PLC account for about 13.2%. The remaining 63% are embedded software development.A friend taught me a method that impressed me deeply. A cloud service provider promised that each host would protect attacks below 5G traffic, and they bought five at one go. The website is set up on one of the hosts, but it is not exposed to the users. The other hosts are mirrored and are used to face the users. DNS will evenly distribute the traffic to the four mirror servers. Once there is an attack, this architecture can prevent 20G of traffic. If there is a bigger attack, then buy more temporary hosts and continuously expand the image.Let's take a look at the original code: a Visitor class that holds the objects to be accessed.声を聞かせて 加藤晴彦 林原めぐみ老鳖大咧咧地对小葱笑道。In subsequent interviews, I found the only squad leader at position 142 at that time: Zhao Mingkai, the squad leader is not an officer in the army, Not cadres, But as the backbone of the team, Having the title of "Mother of the Army" is the soul of a class and plays a far more important role in the battle than an ordinary soldier. Therefore, from his perspective, compared with other ordinary soldiers, he has a relatively large depth and breadth. In the interview, I did find many different things from sorting out his memories.