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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.11. Os.getcwd ()--Get current work dir　　警视厅公安五课的警部补冰室沙也香（松雪泰子 饰）为主角（青木崇高 饰）的学长，也是佐久间班的成员，由于某种原因与其搭档而引人注目，并且还与内部间谍S合作。张杨见皇帝看着嫂子沉思，便恭声道：皇上。[Book Club Reading Help]马大姐原单位的一位老姐妹在退休前光荣加入了中国共产党。她特意来把这个喜讯告诉马大姐，因为想当年二人是同期参加工作的，而且又一起写过第一份入党申请书。马大姐既为老姐妹高兴又为自己伤感，觉得提前退休使自己的政治生命也早早结束了，现在她这样一个闲人哪有资格再提入党的事呢?为此她几天闷闷不乐，突然接到去街道办事处开会的通知。原来马大姐所在的街道开发了一个便民小旅馆，因一时找不到合适的负责人选，便想起了马大姐。因为她退休前曾在国务院招待所工作多年，所以被聘为临时代理。马大姐对自己在有生之年还能为社会做贡献感到非常振奋，觉得可以在新的工作岗位上接受组织上的考验，入党还是有希望的。便在上班的头天晚上写了入党申请书。可没想到旅馆刚开始试营业就出了不少麻烦，马大姐按倒葫芦起了瓢，还得罪了不少来沾光的老邻居。更要命的是她不知道自己刚上任就已结下了冤家对头一一办事处会计老徐其实很想当小旅馆经理，没想到让马大姐占了这个位置，他只是受上级派遣定期末做财务督察。老徐表面上热心地给马大姐支招。暗中却在找她的毛病，准备　　老一代运动员退役，新一代以更开放和包容的姿态站上舞台，在冰面上，两代运动员完成了体育精神的接力和传承，而陈冕也已经做好准备，代表中国站上2022年北京冬奥会的赛场。