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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.以野村宗弘的漫画《浮华》为原作的本作品的舞台是社家的阳台。因为丈夫的工作关系，从广岛来到东京的主妇中山麻衣子，每天都在忙着工作，等待丈夫回来的很晚。在这样的情况下，和麻衣子住在隔壁房间的丈夫的上司二叶一，在隔着一堵墙的阳台上反复对话，缩短了距离。放心，这件事不违侠义之道。Leaders (leaders, meeting chairmen), discussion experts and coordinators3. For the online service process and matters needing attention of Nanjing Social Security, please consult Nanjing Social Security Center at 025-86590921.一个书生猜测道：因为你想在今天给山长送一份大礼，结果你爹没能如期赶来，这大礼就要落空了。Generally speaking, a delegate is a class that maintains a field inside and points to a method. Events can be regarded as variables of one delegate type, and multiple delegates or methods are cancelled through event registration. This article uses delegate and event execution methods to understand the difference between the two.