?? ??????????????????
????:1?????????:?????????
2????????
3?????????
4???????
5????150????
????11??23????(?????? ???????)11?????????23?????????????????,“??”???????????,?????
??????? ???????????,???????,????????????????????????????????????????????????????????????????????????????????????30??????80??????,??,???????
??????,??????????????????????????????????????????????;????,?????«GB/T23776???????»???????????????????,????5??????????5??????
??????????????? ????????,????????,??????,????(???????????????????????)?????????????????,??????????????????,????????????????????????
?????,???????????????,?????????????,???????,????????????????????????????????????????????????????
???,??????“?????????”????,??,???????????,????«???????????????»«????????????????????»«??????????»???????
???????????????????? ?????“???????????????????????????,????????????????”????????????,??,??????,?????????????,????;?????????????????????????,?,??????????
????,??????????,??????“????”??????,??,“?????????????????”??“????”???????39.2??,????120????,????2????,90%??,75%??????????????????“????”??????????????54.76?????????,?????????????(??????????)
???????:??????