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