????:1???????500?4???:?????????

2????????

3???????100??

4???????

5????????

???12????2?????????? (????????? ? ?????)?12????????????2????

???:??,????5?????????????????,???,“????????????”????????????,?????,??“??”??????????????

??????????????:?????????????1000??,????????????210?,????????????????1520??????????????????????3.7???????????,68?????????????????,???????????????“?”??“????”?

????????????????????“??”?????????????????,?????“?????”????,????,??????????????,?,???????????“???”????,?????????????????????,??“?”?(??) ?????????????????:???????