当用户查询时，检索程序就根据事先建立的索引进行查找，并将查找的结果反馈给用户的检索方式是（）。-问呀课堂

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[单选题]当用户查询时，检索程序就根据事先建立的索引进行查找，并将查找的结果反馈给用户的检索方式是（）。

A全文搜索引擎

B元搜索引擎

C智能搜索引擎

D垂直搜索引擎

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