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