?2?????????20????????????????? (? ?????)???????????????,??????????????????????,?????109????21????????

?????????109???21??????????????????????? ?????????????????

???????,?????????????51.2????????????????????????????????????????????

?5??????????????2??,???

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

??:“???????,???????????????,??????????????????????????,????????????????????600????,?????”

????,?????????:“??????140??,????????????????2??????????????????????????,???”(??????????????????????)

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

??

??:???????????,??????????,??????????????