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Stored procedure: (Delete after one year according to the difference between the current time and the time of entering the blacklist)I nodded at this passage, Understand that what Zhang Xiaobo said is indeed reasonable, It is not a lie, Here I think it is necessary to give you one thing about popular science. So we have to say something digressive: The result of a real bullet hitting a petrol tank is not the same as that shown in most movies. One shot can explode the petrol tank, But this is not the case, Although a pure metal projectile will rub against the air at a speed of hundreds of meters per second to generate equivalent heat, And will produce sparks after hitting the metal oil drum, But none of this is enough to ignite petrol, Especially for gasoline with a large total amount, to ignite gasoline, please remember one thing-open flame must be used. In addition, gasoline is a flammable item, but it is not an explosive item in the true sense. Only after reaching a certain total amount can explosion be caused. If the total amount is insufficient, it can only cause combustion without explosion.A brief introduction is as follows:1900年，一场不对等的战争给当时的国家和人民带来了空前的灾难。那些自诩为文明之国的西方列强趁火打劫，妄图吞霸中国，在他们眼中彼时的中华民族不堪一击，野蛮又虚弱。五十年后，侵略者卷土重来，在鸭绿江的对岸、在海峡的中央，肆无忌惮地嘲笑、窥视。而这一次挡住他们的，正是昔日眼中“野蛮又虚弱”的中华民族。让人诧异的是车窗外一片安静。汪魁耍无赖：分什么你们我们？你们就去那边吃好了。For PCB to be processed by SMT, if the minimum spacing between pins is greater than or equal to 0.65 mm, no identification point may be set. Identification points shall be set for less than 0.65 mm. See "Printed Board Design Specification" for the design requirements of identification points.