6-9???????????????

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6-9?

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1??????5????8?????6?8?,???????????????,?,?(5.0~8.0??)???????????????????????4~6?,??,????????6~7??

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1??6????8?????7??8??,??????????????????,????,??(5.0~8.0??)?????????????????????????????????????????????4~6??????

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1???????????7??8??????????????8???????8??,?????????????????????????????????????????,??,??????????????????????????????????????????????????????????5~6????????????????

?(1????????7???????????8??????????-8?????????8????????????) ??:????????????????????