?? ???????????????????
![](http://n.sinaimg.cn/news/1_img/upload/6d34f853/762/w978h584/20190105/e7qc-hrfcctm4896539.jpg)
????:1?????????:??????
2??????????
3???????
4???????
5?????
?????2???17??????? (??????? ??????????)??????????????(?????)????????????????????????????16???????????????????????
?????????????2????????????,?????????????????
??????,???????,?????,???????????????????????????????????????????,????????,????????????,????????????????????????????????,???????????????????
?????????????????????,??,?????????????????????????????????????,??????????,????????“?????????????”?????????????????????????????,???????????????????????,?????????????,????????,????
???,???????????????????????????????????????????????,????????????,?????????????,?????????,??,??
??????????????,????????,32%?????????,25%???????????????????????????????18%?????????
?????????2????23?????????????????????INSA 2????????15??????,????????????,????????,????30%??????21%??15%??????(?) ???????????????:????????