???2??????5?????????????????????? ??,??????4???,??????,?????“????????????????????????”????????
?,????,?????????????????????,“????,??????”
?,????????,????,????“??????”,?????????,“?????,???”
??????:????
??-????Indy500??????????
?????????????????????
??!?????????????????
??????????????????
???100?????????????0.01?
??????????404????(?)
??????????????????????
????????224.6???????10????…
?????????????????????
?????1?????????:??????
??-????????0-0????????
???????????????
??-????Indy500??????????
??????:????????????
PPI??5????????????
????1???????????????
?????????????????????
?????????:????????????
2017????????????“??”???
50???????????:?????????
PPI??5????????????
??????????????????????
??:??????????????
???????????????????«??»
???:?????????????????????