??????

??11??20????,???????????,?????

?????????????????????50?????????,???50??,??????,??????????????????????????????,??????????,???????????,???????“????????????????????????????????”,?????????????????,????

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

????????:??

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

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

??:??

???:???? “????????????”_????

?? ?????????????? ???“????????”

????:1?????????????:??????vx

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

3???????

4??????200????

5??????????

??????

??11??20????,???????????,?????

?????????????????????50?????????,???50??,??????,??????????????????????????????,??????????,???????????,???????“????????????????????????????????”,?????????????????,????

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

????????:??

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

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

??:??

???:????