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

2????????

3????????

4?????????????

5?????24????

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

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

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

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

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

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

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

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

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

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

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

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