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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, A valve seat 7 is arranged between the valve disc 4 and the guide sleeve 6, a packing assembly 9 is arranged between the valve stem 3 and the valve cover 2, an O-ring 10 is further arranged on the upper part of the packing assembly 9, the upper part of the O-ring 10 is provided 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, and the contact end of the valve disc 4 and the valve seat 7 is provided with a water grain surface 41.不是花中偏爱菊，此花开尽更无花。"No, the whole waist is broken and people are divided into two parts from the middle." Wang Zeduan said.　　问题少年瑞恩（本杰明·麦肯锡 Ben McKenzie 饰）在贫民区长大，一日在哥哥教他偷车的时候，被警察抓住。公设辩护队律师桑迪·科恩成了他的监护人。因负责监管瑞恩的生活桑迪让他住进了自己位于纽 波特海滨的家中。桑迪的妻子凯斯顿对瑞恩的到来并不欢迎。她担心瑞恩会对自己年少的儿子塞斯（亚当·布罗迪 Adam Brody 饰）产生不良影响，只同意让瑞恩住一周。在与科恩家相处的第一个晚上，瑞恩遇见了科恩家隔壁的女孩玛丽莎（米莎·巴顿 Mischa Barton 饰），并对她一见钟情。现在Nikita和她的中情局好友Ryan掌管“组织”——一个拥有全新面貌的“组织”，它的新目标是追捕percy当权时成立的地下30人小组，目前这些人都已经叛变大部分甚至被Amanda招募。在首集里，Nikita等人将前往中国香港追捕一个难缠的对手。由于Alex现在是一个公众人物，她会找出自己的方式来帮助他们，同时处理好自己与Sean的恋情。DevonSawa被提升为常规演员，这意味着Owen会有更多戏份。Men's and women's tennis was listed as a competition event in the first Olympic Games in 1896 and the second Olympic Games in 1900 respectively. However, it was cancelled for various reasons and returned to the Olympic family in the 24th Olympic Games in 1988.