?????????????2?????12? ??,??????????????????10??????????20??????????????
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??3?????????0.2%
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50???????????:?????????
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??2??????2?1600?????2?
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???100?????????????0.01?
??:???3???1???1????????
OPEC??2017?????????
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?????????????????????
??????????????00????2??
?????????????????????
??:4?27????????
??:??????????????????
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??“?????”????????3519?
????????:??1??8000?
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