?? ???5???????????????
????:1?????????:?????
2?????
3??????????
4???????
5?????
??6??17??? ???????(???????)17??????,???????5???1800????,??????
???????,5???340??,??????,?15%,??263??????????????,??43%,???????77?????????1?5????????????1800??????????,????(?????)
??:????