2??11?,??“???????????????”??“????????????????????????”???,????,??(??? ? ??)
???????????????:???????????????
PPI??5????????????
?????????????????
OPEC??2017?????????
????????????????????
??????:???????????????
???????100??????????1500
????15????????????:????
?????????????????????
??:?????5-0????????????
???????10????3-2????????
????????!???:?????????
????????????????????
?????????????????
2017????????????“??”???
???????10????3-2????????
??????????:????????
??????????????????????
?????????????????????????
??????????404????(?)
??????????????5???3???
?????????????????64?
????????????200???????
????????????????????
??????????????5???3???
50???????????:?????????