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

2?????

3???????????

4????????

5?????

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

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

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

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

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

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

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

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

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

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

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

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