关键词：中国 经济增长率 汽车工业 钢铁工业 产业结构 

摘要：Core competitiveness is a notion familiar to most managers with an MBA degree, These days, this is what is taught at renowned business schools and colleges. And in the real world,large and small enterprises are increasingly following this course of action, To concentrate on one or two single lines of business in most cases makes sense and boosts profit, There are, however,

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