?????????????????????????t???
????????? ??????????30%???????????????????????
214??????????????????8090?95?
?? ??
????????????s????8?????????????
?????????????????????????????
???????????????214??????1.5??????????????31?????????
?????????????????????ɧ???????????????
??????
8090????????????????????????????95?????
???????????????????????
??????????????????????
???211???????????2.1????????????69%?????????5??????????????????e??????????
?????????????????????????????t??????????????????????????????
????????????????????????????????????80%
?90??
???????80???????????????90???
?????????????80??35%;?90???????95???????100%
????????q214??70???16.7%80???23.1%90????27.4%??90????80?????
?????????
???214?????????10%???30%
??????????
???
??