许多教科书都有附录，尤其是经济学教科书。这些附录提供了阅读和使用图形材料的具体信息。
Many textbooks, particularly those in economics, contain appendixes that provide specific information on reading and working with graphic material.
本科以上学历，经济学，统计学，国际金融，金属材料类的相关专业。
Bachelor's degree or above in economics, metals and material, statistic and international finance sectors.
本科以上学历，经济学，统计学，国际金融，金属材料类的相关专业。
Bachelor's degree or above in economics, metals and material, statistic and international finance sectors.
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