利用待测组分在互不相溶的两个溶剂中溶解度不同而将待测组分从原体系中分离出来的方法叫溶剂提取法。
参考答案：错
在我国，工业产权是指专利权和( )
A．所有权 B．使用权C．著作权 D．商标权
Fair and (73) competition in government procurement around the world is good business and good public policy．Competitive pricing，product (74) and performance improvements result from competitive practices and help ensure that government authorities get the best (75) for the public they serve．
A．help B．server C．value D．policy
