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

2?????

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

4????????

5???????

????????????????2??????????????????13????????????? (?? ???)???13?????,??????????????????????????????????,??

???,????????,?????10%??????????????,???2000?????(????)(??????,??????????)???????????????1??,??????????10?????????????;???1??,??????????10??????,??10????,????????100??????????????????,?3??,??1000?????

??????????,????,?????,????????????????????????????????????????????,??;???3???????,????????50%????????????????;??????,?????????

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