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简要介绍了Ａｃｃｅｓｓ７．０ＣｏｍｂｏＢｏｘ控制的组成和用途，阐述了在煤矿生产调度报表数据库管理系统中按名称选择、存储编码优化数据库性能，同步ＣｏｍｂｏＢｏｘ缩小选择范围等ＣｏｍｂｏＢｏｘ控件高级应用技巧和相关属性含义；提出了优化性能的几点建议。
Briefly introduced the composition and use of Access7.0ComboBox control, expatiated the advanced application skills and related attribute meaning of ComboBox control, such as choosing database by name, storing code to optimize database performance and reducing the selection scope of synchronous ComboBox; A few suggestions to optimize performance.