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

2????????

3??????????

4???????

5???l????????

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