?? ??????????????????
????:1?????:?????
2?????
3????????
4?????????
5?100??3??
??11?????????23???(???? ??????)11??23??,“??”???????????????????????,??
???????????????????? ???????????????????,?????,??????????????????????????????????????????????????????????????????????????????????????????????????????????30???????????????????80????,?,??????????
????,???????????????????????????????????????????;?????,??????????«GB/T23776??»????????????????,??5??????????5?????????
??????? ??????,????,?????????????????,?????(??)??????,??????????????????,??????????????
??????,?,????????????,????????????,??????????????????????????????????????
????,??????“???”??????????,?????????????,????????????????????,??????????«??????????»«?????????????»«??????»??????????????????
??????????????????? ???????????????“????????????????????????,??????????”????,??????,?????????,???????,?????;????????????????,???????????,?????
??,??????,????“??????”????,????,“??????”??????????“????”?????????????39.2???????,????120?????????????????,????????????????2?????,90%??,75%???????????“??”??54.76???????????????,???????????????(????)
?????:??????????????????