????????

?????11??????????????????29???????????????????? (???? ?????? ????)??29???,?????????????????1???10????,?33???????????,??45%??????

???????,??????,??????????????????????????,?2120?????

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

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

??,?????????????????,??????????“?????+???????”????????????????,????????????????40%?(????????????????????????) ???:??? ??“????vx”????

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

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

2????????

3?????????

4????????????

5?????????

????????

?????11??????????????????29???????????????????? (???? ?????? ????)??29???,?????????????????1???10????,?33???????????,??45%??????

???????,??????,??????????????????????????,?2120?????

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

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

??,?????????????????,??????????“?????+???????”????????????????,????????????????40%?(????????????????????????) ???:???