?:??????
50???????????:?????????
???????????:??????????
????????2????????????
????:?????????????1???
19???????????????????
????????????????????
??-????????????????????
????????????????????
??3?????????0.2%
??“?????”????????3519?
??2??????2?1600?????2?
?????????????????????
???1????????????????
????:????????????????
???????????????????????
??2??????2?1600?????2?
????1???????????????
????:????????????!
???:????????????????
???????????????61???(?)
OPEC??2017?????????
??2??????2?1600?????2?
?????????????????????
???:?????????????????????
??????????????00????2??