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

2???????

3??????????

4??????

5?????

?1??8?? (??)1??7??9???5???????????????????,?????????????6.8???,??4????(??,?),??

??????????????,??????1??7??????????????????18????????,???????????????202???????????252??????????????????????,???4??;?500???

???,?????????,??4?,????????????????????????????????????????????????????????????????,??57?????????????????????;?50??,?????????4???×5?,??21?????????????????30??;?????,????????????????????????,???,??(??????????????)

?????:??????????