????:1?????????100?????:?????????

2????????

3?????

4???????

5???????

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