Refining is the process of ________ these impurities from the pu
分类: 基础英语(00088)发布时间: 2024-08-26 05:35浏览量: 0
Refining is the process of ________ these impurities from the pure metal. A、planting B、separating C、manufacturing D、conducting 【正确答案】：B 【题目解析】：plant种植；seperate分离；manufacture制造；conduct组织，实施 句意：精炼是从纯金属中分离这些杂质的过程。