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As far as possible, the test points are uniformly placed on the welding surface, which is convenient to use on-line test fixtures and test probes. The test points of SMC/SMD on the component surface are led to the solder surface through holes. Individual test points are allowed to be placed on the component surface, but no more than 2 test points on the component surface are allowed. Components with a height of more than 10mm cannot be placed on the test surface."It is incredible to dig so fast, I can also imagine how bad your situation was then. The "killer bees" all over the sky are already very difficult to deal with, Hitting the body can kill people with almost one blow. Two or three big mice can bite off people's limbs. The few besieged one person, which is even more destructive than wolves. However, judging from the history of the war, although the 149 position was hit hard, it finally successfully completed the defensive task. How did you do it? Or how did I get out of trouble? "I wrote down the key points before, stopped writing and then asked.Accessible at any timeIn fact, each design pattern is a very important idea, which looks very familiar. In fact, it is because what we have learned is involved. Although sometimes we don't know it, it is actually reflected everywhere in Java's own design, such as AWT, JDBC, collection class, IO pipeline or Web framework, in which design patterns are everywhere. Because of our limited space, it is difficult to talk about every design pattern in great detail, but I will try my best to write down the meaning clearly in the limited space and space so as to make everyone understand better. If there is no accident in this chapter, it should be the last talk of the design pattern. First of all, it should be the figure at the beginning of the previous article:走到一边，王勇撕开包装。3. Ask key people for advice夜幕拉开，屋子里的灯火，早就熄灭了。