第18题: [单项选择]TOTAL命令的功能是 ______。 A. 对数据表记录个数进行统计 B. 对数据表字段个数进行统计 C. 对数据表的内容进行合并 D. 对数据表的某些数值型字段按指定关键字进行分类汇总 参考答案:D 答案解析:[知识点] 表的基本知识 [评析] 对当前表中的数值型字段进行分类汇总。
第33题: [单项选择]{{B}}Questions 32 to 35 are based on the passage you have just heard.{{/B}} A. Baby-the Parrot Detective. B. An Amazon Parrot. C. Rising Crime Rates in American Society. D. How to Protect Your House. 参考答案:A 答案解析:[听力原文]
Which of the following would be the best title for this talk
[试题分析] 综合判断题。
[详细解答] 综合全文来