?:??????
????????????????or??????
??????:?????????????
?????????????????????
???????????????????
????????????????????
???????????:??DQ??????
??:??????????????????
“???”?“???”,?????????????
??????????????12???
??????6.6???????10??
?????????????????????
??????????????????
ISM??????????????
???????????10????????
??????6.6???????10??
??????????????????????
??:??????????????????
???????4???????????????
??????????????3??????
??????0.7%???0.8%
????????????????????
????????????????????
??????????????????????
????????:????????????
??:??????????????????