?? ?????????? ?5.4??????
????:1?????:???????
2????????
3?????????
4????????????
5??????????
??????????11??????????22? ?,??????????22??????????,??????????5.4?,??????????????????“??”?
??,?22??18?45??20?????22????20??????????40?????20??????43??21??????????29??,??20???????????40??5.4?,???23.2?????????????????????120.18?,?????????????23.2?????????,????7.7??
??????????????,?,????????????????????,?,?????“?????????????????????”????,??????????
???????,???“??”,?“???????”?
?????,22??20?????????40??4.7????(?) ??????:??