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