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

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

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

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

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

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

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

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

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

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

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

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

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

?????:?????