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

????:??????:??V??40??????

????????,??????????,????“???????15?1.5????”?????????“????10????1.5???”,????“????????????10??????????????1.8??”???10???????,?15??????????????1????????????,????1?????????6?????

??“?????30?1.5??????????”?????????,???50%???????????,???????????????????“10????”,“????????”?“????”?????????????????,???,?“????”??????“????”?

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

?,??,?????5.4?????

??????,??????,?????????????,???5000???,3900???3800????????;??,??1-5?,?1??????33.9%?

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