????:1???????????:????200?500

2??????

3?????vx

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

5???????????

????????12???1??? (??????????????????????? ??????)??11?30????22??????????25?,??4??,??????,???????????“???????????????????”??

?????(?)

?:????

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

“??”:???????????????????4????,??????????3.8???????????????????????3.35??

“????”:??????62??,??????????????“????”?

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

“?”:?,?????,?,????????????????,??10%?????????????????????????15%?

“??”:????????????????????,????????????,?????,???????,??75%??,??0.3??????,????????????,???????????????????(??)

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