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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, A packing assembly 9 is arranged between the valve stem 3 and the valve cover 2, the O-ring 10 is further arranged at 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 which 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, the packing assembly 9 comprises a flexible graphite packing layer.崔江熙将在剧中饰演白灿美（伪装名：白章美），她原本是传奇的秘密特工，实力超群但性格最糟，是后辈们最想避开的对象，也是最年轻的组长。在某次行动中不仅部下死了，还让犯人逃走了，之后她就在国情院网络安全组里以“核弹两人炸鸡”的ID每天平均发表250条以上的评论。她原本已经死心认为自己再也不能回到现场，但某一天突然接到现场出动的命令。Student Dance -- 欅坂46讲述了现在的刑警们和过去的刑警们通过老式对讲机对话，解决了长时间没有结案的案子。　　莲花已成了艳翠楼名妓。刘学栋借口到上海了解土特产行情实为斗蛐蛐。上海斧头帮头目刘七心狠手毒，借斗蛐蛐之名聚敛银元。刘学栋同他打了几次交道，震慑了刘七，刘七佩服他是条汉子，隧成了朋友，并帮他做成了生意。　　几年过去了，海燕海君已经成了十一二岁的中学生，出落得亭亭玉立，能歌善舞，是学校里的两枝花，而金花一天到晚推车买鱼丸，辛苦操持家务，海燕根据童年的懵懂印象，认为是妈妈逼走了父亲，所以处处和母亲作对，反而是海君体谅母亲，给母亲帮助。艾瑞克（John White 饰）算得上是一个标准的失意青年了，连在家中打个手统也造成祖母受惊去世的恶果。艾瑞克与女友翠西交往两年，但一直未能上垒，现在已是全校最后的处男、公认的笑柄，这些还不算，他是大名鼎鼎的“硬条”家族的一员，堂兄德维特等人名满江湖，给他巨大的心理压力。翠西终于同意与艾瑞克共赴巫山，岂料两人时运不济最后又发展成一场屎尿屁笑话，幸好德维特的学校要举办考后大裸奔活动，艾瑞克与死党匆匆投奔堂兄希望用狂欢宽慰心怀……