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