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Regular maintenance generally refers to the regular inspection and maintenance of hardware facilities. The range of detection here is as wide as possible. If the range is too large, Depending on asset type and asset range, Sampling tests are conducted, But all machines must be checked once a year, Replace the equipment with unstable performance or failure in time. Attention should be paid to monitoring the hardware equipment here. I have encountered the event of standby server failure for half a month. Let's not talk about it. Finally, maintenance should cover all equipment, regardless of network, security, server, basic power, air conditioning, UPS, etc.[Machine Learning] Multi-classification LearningHere's my card. My card　　《纳尼亚传奇》根据英国作家C.S·刘易斯同名系列小说改编，前两集由沃尔顿、迪士尼联合制作，但由于去年的《凯斯宾王子》没有达到他们的票房预期，迪士尼退出了该系列电影的制作。之后沃尔顿找到20世纪福克斯接手，并决定将其成本降到1亿4000万美元。At a 5G test point in Shenzhen Nanshan District Science Park, the park is covered by 5G and 4G networks at the same time, while 5G mobile phones have reached a download speed of more than 1G per second in a very short period of time.言毕，大步走向正中桌案。