根据掌握的山西省能源基地建设相关知识,分析回答下列问题
(1)国家为何选择山西省作为我国的能源基地?
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(2)山西省为建设能源基地采取了哪些措施?
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(3)现阶段山西省的煤炭主要通过什么方式运输到东部和南方地区?
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