?????????????,???B??????????????20%?
?????????,????????????????,??,???????????????“????????????”?(?? ??????)
????:???????????????
??3?????????0.2%
??2??????2?1600?????2?
?????????????????????
????:??5?????????????
????15????????????:????
???????????????:??????????
??????:?????????
???1????????????????
????????????470?:???3?1?
???7??????????????????
????:????????????!
?????????????????????
??:??????????????????????
A???“???”:????????????13??
??????????????????
??????????????5???3???
OPEC??2017?????????
???:????????????????
?????????????????????
????1???????????????
????????????????????
PPI??5????????????
??????????????????????
????1?????????????????
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