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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 41.4 ", when a sufficient number of Sentinel processes (greater than or equal to the value specified in the configuration file) confirm that the Master Primary server has entered the subjective offline state (SDOWN) within the specified time range, the Master Primary server will be marked as objective offline (ODOWN).抗战时期，国民党军队组建了以陈一鸣少校为首的伞兵突击队。突击队的成员来自集中营和各个监狱的囚犯，任务就是暗杀日本驻华特务头目中村一郎。陈一鸣找到了自己的老部下冷锋，两人又招募了上海滩着名的老千小K，燕子门的掌门人燕子六，建筑系硕士、共产党的谍报员书生，日本陆军航空队战俘藤原刚和中村一郎以前的恋人、上海滩的歌女蝴蝶，几人通过了严酷的训练……2045年，科拉普斯液体污染了全世界。往后我们再出海，就不怕海盗了。王强大从小拥有过人的逻辑推理能力，经常暗地协助检察官好友处理案件。凭着优异的数理能力，成为了知名的数学教授，但却因为一个承诺意外成为补习班的数学名师。汪蔷薇原是历史老师兼古董鉴定师，但却因为某个意外事件，成为了王强大的同事！当孤傲冷酷的王强大，遇上乐观热情的汪蔷薇，关于爱情跟未来，他是否能算得出来?