??
?????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??(?) ??????????????:?????????
?????????
?????? ????????????5.6?????????????????