????:1?????:???????????

2???????

3?????v

4??????????

5?????95???

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