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Zhao Mucheng did not know why Liu Guiduo only called Cui Yong and did not call him.31The level of pilots is different.Buckeye flowers have different colors, generally yellow, orange and pink. Why do flowers of the same plant have three colors? This is actually the way Buckeye flowers tell bees and bumblebees whether they are popular at this moment. Those flowers with nectar and waiting to be pollinated will appear yellow, which is an irresistible color for insects. When pollination is over, the flowers will slowly turn red, because bees and bumblebees cannot see red, thus the flowers will disappear in their eyes.The PCB shall ensure that after the components are inserted, the X-direction component edge is at least 3mm away from the board edge of the PCB. If it is less than 3mm, the process edge shall be added. The width of the process edge shall be more than 3mm, but generally not more than 10mm.