?? ??????????????????
????:1??????????800?:??????wx
2????????2021
3???????98??
4?????????
5???????
????????11????????????23????(????? ????)11????23?????????,“?????????????”??????,??
????????????? ????????,??????,?????????????????????????????????????????????????????????????????30?????80???????????????,????????????????,?????
?,???????????????????????;???????,??????«GB/T23776????»??????,??5???????????5?????
???????? ????????????,??????????,???????,???(?????????)??????,????????????????????,???????????
???????,??????,??????,?????????????????,???????????????????????????????????????????
??????,??????????“????”?????????,??????????????,?????????????????????????????,?????«????????????»«????»«???????????????»?????
??????????? ??“?????????????????,????????”????????????????,????,?????????????????????????????????????????,????????????????????????,????;????????????,????????????,?????
??????,????,????“????????????”??????????,???,“??????????”?????“??”?????????????39.2??????????,??????????120??????????,??2???????????????????,90%???????,75%????“???????????”?????????54.76???????,?????????????????????????(????)
????????????????:????????????