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

???????????????2?????????????7?????????????????? ??????:??????????,?,????????????????????????6????????

??,?6???????????,?????????????????1?????????????26?????,??????????????????????6000?????????????????,5???????,?????5.2?,?????????????????????6????????????,??7??????????4.0???????

?,??????????????,????????????????6?????????????,?3??????????3?????????????????

???,???20000?????,???340????????????,????11000?,????

???,??????????????????,??????,?6??????????????????????(?????????) ???:?????