File system caching has a significant impact only on query Q1 which retrieves all documents without any predicate evaluation.
文件系统缓存仅对查询Q1(检索全部文档，无谓词运算)有较大影响。
In the evaluation of file transmission time, based on the algorism for linear transmission path, we take the branched path into account to make the algorism perfect.
评估文件传输路径的响应时间时，在直线计算方法的基础上，添加了分支路径计算方法。
We can resort to interview, grade evaluation form and feedback in evaluating the teaching file with its range of application.
教学档案袋的评价可采用面谈、等级评价表、反馈意见表等各种形式，教学档案袋也有其应用的范围。
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