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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.16.2 The treatment of ear air pressure dysfunction is ineffective and unqualified.他用力定了下心神，睁开眼睛，查看四周情形。人家勤俭持家，连公主媳妇都干活，那两宫女算什么。钱明诧异道：咱们才回来，队长怎么知道你绘了地图？张富见板栗不经意地扫向他，心中咯噔一下，急忙说道：是我。托德·施特劳斯-斯古尔森将执导新线影业新片[难道不浪漫](Isn’t It Romantic,暂译)。影片由蕾蓓尔·威尔森主演，讲述一位刻薄女孩的平凡生活一夜之间变作了充满浪漫的爱情喜剧，她也由此成为朋友们的话题中心。斯古尔森以拍摄喜剧见长，2015年他导演的[幸存的女孩]曾入围多伦多电影节。财会专业的沛沛毕业在即，因去给暗恋了七年的男闺蜜阿达的毕业典礼帮忙，而遇见了物理系的高材生浦帕。自此他开始闯入沛沛的生活，平淡无奇的生活掀起了啼笑皆非的浪花，两人更是误打误撞地成为合租盟友。在相处过程中对对方渐生情愫。此时，沉浸在暧昧中的浦帕出现了情敌——大明星阿谭。阿谭对沛沛穷追猛打，使得一直稳坐泰山的浦帕开始出现了危机。但所幸在浦帕坚持不懈地努力下，沛沛终于接受了他的爱意。其实，在沛沛心里，早就对浦帕有了不一样的情感。然而，就在两人的爱情即将归入征途时，浦帕却要去中国了，随之而来的除了异地问题，还有。。。