A. To purify substances B. To cut objects C. To observe tiny particles D. To weigh substances 相关知识点: 试题来源: 解析 A。centrifuge(离心机)可用于提纯物质,选项 A 正确;选项 B 离心机不能用于切割物体;选项 C 离心机不是用于观察微小颗粒的;选项 D 离心机不能用于称重物质。反馈...
Lucene’s job is to build this magic structure and enable its superpowers, right? True, but it needs a little help from you: You need to store the index structure. You need to decide which of the features you require and which data preparation Lucene will do for you. You need to ask...