7?????????????98%

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

???8??8??(?????? ??????)???8????7??????????????,7????,????????????????(??????????????????????)????????????????,?????????????????????????????98%,?????42%???

????,7????????????????3.3????????,???????;???????????????7??????????????5000??????????????????

?????????,7???4.2?,??17%?????,??4???????4??????,?????,?????

????????,?????????7??????2.5????,????24%????????,??,??????7???????????????????

????,??????,???????,????????????,?????????????,?????“???”???(???????????) ???:??????