西方学者划分货币层次的主要依据是（ ）。

试卷相关题目

SQL Error: select id,body,options from ***_enewstiku where sourceid='27089' and id < 2246529 and id<>'2246529' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='27089' and id > 2246529 and id<>'2246529' order by id asc limit 5