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