??????????3????????????Ч?????,????3????????????????,????3?????????????Ч??????

???????-????

???????-????: ?????50000???(?????40000),??????????????????Ч???????

???????????????ж??????????????,?????????′ι???????

(????/????/???/????)?????.

6????????????????20%(1???10%,???+2)

6???????????????30%(???1???15%,???+3)

??????-???????:??/??/??/???????20%,????????????15%,??ι????????????

5%;????????????15%,??ι????????????5%;

???????????

????3????????????????????????????

????3????????????????

????????????????40407????3??????

?????α?????С???