????:???
????????????????????
??!??????????????????
?????????????????????
????????????????:????????
?????????6.5??????????
????????/?????????/???
??:?????????????
???????????:?15.60%??????
?????????????10???????
??????????????
????:????????????????????
??:??????????????????
??:“??+????”?????????
???????????:?????????
?????:??????????????
??:??????“??”???????
??????????????????????
??WTI????50???????
??:???????????5??????
??:?????????????
?????????5.5%??????1????
????????/?????????/???
??!??????????:???????
??:“??+????”?????????
???!?????????????????