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A low temperature stop valve, Unlike Example 1, Comprises a valve body 1 and a valve cover 2, A valve stem 3 is arrange in that valve body 1, One end of the valve stem 3 is provided with a valve disc 4, The other end of the valve stem 3 is provided with an adjusting handwheel 5, A low portion of that disc 4 is provided with a guide sleeve 6, The guide sleeve 6 is fixed by means of a connecting piece and a spring pad 8, Between that disc 4 and the guide sleeve 6 is provide a valve seat 7, Between that valve stem 3 and the valve cov 2 there is provided a packing assembly 9, An O-ring 10 is further dispose at that upper portion of the packing assembly 9, An upper part of that O-ring 10 is provide with a packing gland 11, The valve body 1 is provided with an arc-shaped end face 12, the arc-shaped end face 12 forms a line seal between the valve body 1 and the valve seat 7, the contact end of the valve disc 4 and the valve seat 7 is provided with a water grain surface 41, the packing assembly 9 comprises a flexible graphite packing layer, the valve body 1 is provided with a liquid inlet cavity and a liquid outlet cavity, the two O-rings 10 are concentric arranged, and the inner diameter and outer diameter of the two O-rings are different.身为珠宝经理的沈甜在爱情导师曼陀罗帮助下，听从冥冥中爱神的指引，寻找到真命天子，从此相信爱情，曼陀罗警告她绝对不能陷入脱单倒计时的爱情咒语。爱情咒语是遭到背叛，一定要在另一半结婚前脱单，否则找不到真爱。沈甜撞见男朋友李旦出轨，自觉应验爱情咒语。她必须在二十小时内前男友闪婚前，寻找到真爱。为了完成脱单，她找来闺蜜唐糖糖，两个人踏上脱单的爆笑之路，她根据脱单攻略来寻找真爱，却一次次失败收场。她到酒吧里去寻求脱单，遭到流氓骚扰，郑超从天而降，拯救了她，一系列求爱的举措令沈甜感觉遇到真爱，二人度过甜蜜一夜。她亲自送结婚珠宝到婚礼现场，珠宝被人调换，沈甜发现是真命天子偷了珠宝。原来一切都是爱情导师、郑超为首姐妹花诈骗团伙设的局。沈甜面对洗心革面的郑超选择了宽容。自己借助在魏宫居住过的便利，暗自布置救走了薄姬，君上迟早会有所怀疑Sui是个平凡的女孩，她大多时间都用来嫉妒其他的女孩。有一天，她接受了一件好事，她能够变成她嫉妒的任何人。她的梦想就要成真了，她能得到一个不错的工作和她一直想得到的男人。但是她会无意中失去一些东西。一个一直在身后支持她的人。这个她认为需要的东西，是美貌吗？而事实上，充满嫉妒的生活又是怎样的？比如说士气，苏角是王离的属下，他麾下的士兵同样经历了蒙恬那场变动。The essence of the mirror server mentioned in the previous section is to build a miniature CDN by itself. The same is true behind the high-security IP provided by major cloud service providers: the website domain name points to the high-security IP, which provides a buffer layer to clean traffic and cache the content of the source server.Software Firewall: Firewall that applies software processing logic to run on a common hardware platform with low performance and low cost.