?? ??????????????????
????:1???????????:??????
2???????
3???????
4?400??3???????
5??????????
??????11?????????????23??(??????????????????????? ????????)11?23?,“??”??????????????????,???????????
?????????????????? ?????????,????,??????????????????????????????????????????????????????????????????????????????????????????????????????????????????30?????80?,?????,?????
????????,??????????????????????????;????,??«GB/T23776??»??,????????????5??????????????????????5???????????
??????????????? ??????????????,???????????,?????????????????,??(??)?????????????????,?????????,??????????????
????,??????,????????????,????????????,??????????????????????????????????
????????????,????“????”???????,??????????????,?????????????,??«????»«??????»«???????????????»????????
?????????????? ???????“?????????????,??????????????????”??????,????????????????,???????????????,????????????????,?????????????;????????????????,????,????????????
???,??????,????“????”??,??????,“???????????”????“??”????????????39.2????,??120?????????,????2?????????,90%????????????????,75%?????“?????????”????54.76????,????????????????(???????????)
????????:????????????????