???2??????????8?????????,????(????????????)??????????????3???????????
?,?????
????????????????????????????,3?,????
??,??3???,????????????183?????????????????????????????????????(???? ?????????)
??????????????????????:????????????
?????????????????????
??????????????360°????
????????????????????!
?????????????????????
????3???????7.2%
????????????:????????
4?3?22?????????
???????(?)“??”“??”“??”????…
?????????12????????
????????:????????????
???:???????????:????????
????????10?50????????
????????????????or??????
??????????????????
??:?????????????????
?????????????????7???
??????????!??????????40?
???????????:??DQ??????
??????????????????????
????????:????????????
ISM??????????????
????????????????or??????
??????????????12???
?????????????????????
??????0.7%???0.8%