????:1???????????:????sn

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

3?51?????

4?????????????

5???????sn

???10???????14?? (?? ????????)?????14???????,??????,????????

???,??????,?????????????????,???????????????,????????????????????????????????????????,????????????,????????

?????,9?????1.6%,???????????????6???,?????????????????

??,9???????,?????,?????????????????????,????????????????????,??????????????,?????????????????9??????,9??????????????????????

??????????????????,????,????800?????????????????,69%?????????(?????????????????) ???:???