????:1???xt?88:???????

2?????????

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

4??????????

5?9598????

??6??????????????17???????? (??? ????????????????????? ??????????????)??,????????????????“??”????,?????????????????,???????,??????

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

???????,????????????15%???500?????????;??300????????????????,???????210???????????????????

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

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

???????,?????????????????????,??????????30?????,??????????????????????????????2000???,????????????????????????6.1???????????????????,??????????,???????,???????????????????????

??,??????????10???,????3.72??,??,?????????2.38???????(????????????)

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