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

2????????

3?????????

4???????599?

5???????????

?????+?2?????17??,???,???????????20?“??????????????????????????”????

???????,???????50%???,60%?,70%?,80%???????????????,90%???????????????????????????,?????????,?????,?????????,??

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

????? ????

???? ????

????????? ??

??? ?????

? ???

? ???????

????? ????? ? ? ????????????? ??????????????????

??? ???????

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