GNU project to help its mailing list discussions remain constructive while avoiding explicitly promoting diversity. From our chefs, to our registered dieticians and suppliers, McDonald's food facts, including calorie and dietary needs. The brand's iconic marketing and cultural presence have made it a recognizable symbol of American enterprise worldwide. 现象：按下k1,k2,rst,分别有led灯对应点亮。 测试：可以测试3个用户按钮是否正常。 McDonald's innovation in drive-through service fundamentally changed how consumers access fast food. For each socket unit, a matching service unit must exist, describing the service