????:1???92?95?98?:??????????

2????????

3??????

4???????

5??????

??,???“????????”????????????????“????????????”,????????13??????????????,?????????????4707??,???????????????32%,???????,????

9?5????,???1?MU5807???????????????,???????????,?????????,????????,????

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

???????????? ???????????????????:???10???????????????,?????,??20%??50%????

???????4??????????,????2?,????2??????????????????,?????????????????????????,??????????

? ?:???????,??????25-30????????????????????????????,????????????????????????????????,???,??????????????,?????????????1500????????????????(??????) ??????????:????