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???:????
??:4?27????????
??:?????????????
???????????????:??????????
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????:?????“???”????
????2016????2146??????????…
2017????????????“??”???
PPI??5????????????
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????1?????????????????
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????:??5?????????????
????:?????????????1???
???100?????????????0.01?
???????100??????????1500
2017????????????“??”???
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????:????????????!
??2??????2?1600?????2?
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