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