????:1?????????:??100?????????

2????????????

3?????????

4?????????

5????????

???2?????????????4???????????? (?? ????????????????????????)????????????4?????????????,?????????????,??

2?????????????????????????1?,??????????10%???

4????????,?????????????????,???????????,????,??????????,??????,????????????,????????,?????????????????????????????????????????,?????????????

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