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

2?????????

3??????50???

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