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假设在Access中已经建立了“学生”表,表中包括“学号”、“姓名”、“性别”和“班级”等字段,如果要统计出每个班级的人数,那么在查询设计视图的“班级”的“总计”行和“学号”的“总计”行中应分别选择(...

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