????:1??????????:???????????

2???????

3???9598???

4?????v

5?????????

??????????11??????????????????23??(????????????????? ???????)11????23????,“???????”??????????,??

????????????? ??????

????,????,??????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????????30?????????80?????????,??,???

????,????????????????????????????????????;????,???????????????????????«GB/T23776??????»???????????????,????5?????????5????????????

????????????????? ?????????

????,??????,?????????????,????????????(????????)????????,???????????,????????????????????????

??????????,????,??,???????????????????????,??????????????????????????????????????????????

????,???????????“??”??????,???,???????????????,????«??»«??????»«??????»???

???????????????? ??

“??????????,?????????????????????”?,??,????????????????,????????????????????,??;???????????????,???????,??????????????

????,????,??“???”??????????,????????????????,“??????”?????“??????????”?????????????39.2??,???120????,?????2????,90%??????,75%????????“????”??????54.76????,????????????(?????????)

????????:???????