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Compared with the example of electric lights, file uploading differs in that it will now face more complicated conditional switching relationships. In the example of an electric lamp, the state of the electric lamp is always from off to on and then to off, or from off to low light, low light to strong light, strong light to off. ABCA always seems to follow the rules, so even if you don't use the state mode to write the light program, but use the original if, else to control the state switching, you won't lose yourself in logic writing, because the state switching always follows some simple rules.故事发生1934年南方某地一个叫清洁堂的围屋里。幽深的围屋是寡妇们生命的祭祀台。她们因为各种理由被驱逐出自己的家园聚集到这里。冰冷的围屋，如同牢房一般，不仅仅有着高墙铁门，也被封建传统的清规戒律紧紧地笼罩着……　　心怀镖头理想的雷儿当了镖局的趟子手，同时对朝夕相处的武魁暗生情愫。武魁钟情于没落王府格格谟娅，这让雷儿暗自神伤。在护送谟娅的任务中，雷儿闹出了笑话一箩筐。但当路遇悍匪的紧要关头，雷儿挺身而出。正是雷儿的勇敢，得到了土匪首领哑狼的爱慕。至于系列本来的主角樱木泉，在上两辑是新人女警，经过7年后已成为在第一线活跃的搜查官，然而某次她在进行特殊任务时消失，警视厅为了避免公众恐慌，把和她失踪相关的“不适当真相”隐藏。然而“未犯”系统的出现，很可能和她的失踪有关，到底当中有什麽不可告人的真相？新主角井泽范人和樱木泉之间又有什么关系？重回永宁村的胡巴再度被妖王追杀，逃亡时结识大赌徒屠四谷和妖怪笨笨，念子心切的天荫和小岚通过天师堂找到胡巴并一起逃离险境。岂料，一场更大的惊天阴谋尾随而至，伺机而动……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, 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, 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, and the valve body 1 is provided with a liquid inlet cavity and a liquid outlet cavity.