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A packing assembly 9 is arranged between the valve stem 3 and the valve cover 2, the 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. The arcuate end face 12 forms a line seal between the sealing surface of the valve body 1 and the valve seat 7. The water grain 41 can ensure the sealing performance of the valve seat 7 and the valve disc 4.大学教授李梁的新书签售会上，消失多年的亲爹李易生突然出现，打乱了李梁一家原本平静的生活，李梁和妹妹李楠视养父李东山为亲爹，并不承认眼前这个没有参与过他们成长的李易生，李易生自觉对李梁兄妹亏欠太多却并不介意，他努力渴望参与到子女的家庭和生活中却频频捅娄子，子女还要为他处理后事。李易生打年轻就女人缘极好，甚至连李东山家的保姆也莫名其妙地爱上了他，还闹出了一段夕阳红三角恋。就在此时，李易生另外的一个儿子李壮刑满释放，他为救身患尿毒症的女友小慧而四处筹钱，甚至花样频出地去找李梁要钱以至招来李东山全家对这对父子更深的误解，当真相大白，所有人都原谅了李易生，李易生也因病住院，回想往昔种种画面，李梁终认亲爹。Then each station has its own timetable. If you want to take a bus at which station, you need to check the timetable in advance.The detection of time relay mainly includes contact normal detection, coil detection and coil energization detection.杨寿全则直接钻进了书房，看也没看他们一眼，连早点都是让下人送到书房吃的。林贤原是一位优秀的花剑运动员,曾荣获城运会三连冠。退役后后在一家俱乐部作王牌教练,一年后因一起银行劫案又成为见义勇为的英雄，并与所救周漪结为夫妻。正当二人为美好的生活尽力打拼，周漪又怀孕在身的关键时刻，林贤突感身体极度不适。一次与俱乐部新会员，美国灵勃生物基因公司中国市场总监连菲交手时被连连击败，引起老板张大平不满，只好挂剑而去，生活顿时陷入低谷。灵勃公司〈中国〉总经理田友是林贤生死患难的朋友，得知他的遭遇，加之公司急需一位平民英雄作形象大使，便力荐林贤出任。林贤摘桂，命运陡转声名鹊起，被媒体、鲜花追捧。不料祸起萧墙，林贤被查出是艾滋病患者，这对灵勃打开中国市场无疑是一个灾难性的打击。为了掩盖事实真相，美国市场部派来阿瑟实施让林贤消失的“蓝百合”行动计划，于是几股势力展开了真相与虚假，正义与邪恶的角逐。