???? ????????????5.6?

?1????????????30????? ?,30??,??????????5.6???,??????21?6.4??

??????????????????,30??????????10????11?????,??5.6?,????????10??????,?????????????5??,?????????10??4????????????,???3.2?4.3?????,?????????????

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

???,30?10???????????11???5.2?????????(????) ?????????:??