Economies of scale refer to the increase of output faster than the increase of inputs. "Scale" here refers to the larger production batch caused by the expansion of production capacity. "Economy" here refers to cost savings and benefits. Increase or increase in reward. According to the above definitions, Which of the following are not economies of scale: (). ['It takes 10 hours of labor to produce a bicycle in a factory. At the same cost, it takes 5,000 hours to produce 500 vehicles. After the scale of the factory is expanded, it takes 30,000 hours to produce 5,000 vehicles.', 'A factory originally produced 5 million tons of steel per year, invested 100 million capital, and 5,000 people. Under the condition of unchanged technical level, the investment doubled, and the annual output of steel was 10 million tons.', 'The production of enterprise A affects enterprise B. Because its impact is positive, the production of enterprise A is lower than the optimal level of the society, but if they are combined into one, the external influence at this time will "disappear".', 'Switzerland has concentrated a large number of companies producing watches, forming a larger industrial scale, which has improved efficiency and reduced costs.']