✔ 最佳答案
DOCX:
.DOCX files is developed by microsoft. It's very common because .DOCX has a lot of more function than .RTF, also, it is more safe than .RTF because they use diiferent encoding.
.RTF:
.RTF is also developed by microsoft, but it uses a diffrerent encoding, the file size is much more smaller also RTF development has been halted while DOC is still being actively developed.
2015-07-24 21:34:54 補充:
.DOC/.DOCX is better than .RTF