?????????????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??????(?) ?????:???????????

??

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