In exploring data for a research proposal, sources can be divided into _.primaryA．primary source and secondary sourceB．first source and second sourceC．direct source and indirect sourceD．main source and minor source
In exploring data for a research proposal, sources can be divided into _.primary
A、primary source and secondary source
B、first source and second source
C、direct source and indirect source
D、main source and minor source
发布时间：2024-11-24 14:56:32
