?? ??????????????4?????????
![](https://image.chezhanri.com/2019/1112/8d8a6b91edd2535923f6739bd9731052.jpg)
????:1???????:51????????
2????????
3????
4??????????
5???????
?????????????????????,????,9?2?????,???(CNAS)???????????????,??????????????????????????????????????????????????????????????8??????18??????????,???????????????????????????(CNAS)??????4????????
?????????,????“?????”????“???”?????????????,?????????????????????????“?????????????”,????,???????????????????????“??????????????”,??????????????????????????,CNAS???????????????????????????????????????
(???? ??????????) ???:????