?? ??????????????4?????????
![](https://image.chezhanri.com/2019/0618/20190618110610123.jpg)
????:1???????1500:?????????
2???????
3???????????
4?????????????
5???????
???????,??????,9??????????2???????????????,????(CNAS)????,????????????????????????????????????????????????????????????????8??????????????????18?,??????????????????????(CNAS)??????????????4???????????????
??????,?????“???”?“????????????”?????,???????????????????????“????”,???,????????????????????????“???????????????????”,?????????????????????,CNAS??????????????????????????????
(?????????? ???) ????????????:??????????