????:1???????:???????2?

2????????150

3????????????

4???400?3????????

5?????

????2??????????6????????????????? (????????????????? ????)?????????????,????????????????6?,?,???,????????????

????????????????????3??,??,????????30?????????????????

??????????,?6????,??,????????????,?????????????????,????,??,??,??

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