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However, I feel that flat-heeled shoes are not as comfortable as shoes with some heels if I do squat back. On the one hand, the slope heel is conducive to solving the problem of insufficient squatting depth or upper body leaning forward after squatting caused by insufficient ankle flexibility; On the other hand, it is also conducive to the legs to stand up after squatting deeply.(2) Allowances under special working environments and conditions such as middle shift, night shift, high temperature, low temperature, underground, toxic and harmful, etc.;The second part of the classification is to find different points and expand each dimension into relevant contents. For example, ethnic groups can include Han, Hui, Gaoshan and so on. The principle here is MECE.TelecommunicationsWIN2000: In addition to the parameters of TcpMaxHalfOpen and TcpMaxHalfOpenRetrieved described above, WIN2000 operating system can increase the maximum number of half connections that the system can accommodate by setting dynamic backlog (dynamic backlog). Configuring dynamic backlog is completed by AFD.SYS driver, which is a kernel-level driver and is used to support window socket-based applications such as ftp, telnet, etc. Location of AFD.SYS in the registry: