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

2???1000?????

3?????????

4?????

5?????????

??2??19???(????)??,????????????2???????????????????18??????,???????????,???25%????????,?????????????4??2????

????????,?,?????????,???,????10%??????,???????,???????????????????????????????????????,???????????25%?????????

  ???

???????,??????????????????18????,4?????25%?????????,?????????????????

?,????????????????????????????,?“??”????????????“?”,??????

?????????????,?,????19????(????)

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