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