???????????????????佨??

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

??????????????????????????????????????佨?顣???????????????????????????????????????????????????????????????Ч???????????????????????????????????

???????????????6??????????????????120??????????????????????????????????????????????????6??????????????????????????????????

???裬??????30??????????????????ν???6???????????????2???????

1.?????????50????

2.?????????????1?????1????????14???????

?14??????????????????????????50+80+110+140+170+200+230=980????????????14×50=700???????????960+700=1660

????￡??????????????????????2??????1960+1500=3460??

?????????????????齱??????????RP?δα???????????????????2???????????30?????????30×100=3000

???????????460????????????????????????齱??????

??????棬???????????????????????????????????????????????????????????μ???

?????????????????棺20×30+100+200+400=1300?????????????????????????1000??+2???????2??????????

???????????16???????????????1????????240??100????2????????2???????=200??

????￡?1300×2+1000+200+3460=7260??

?????????????????Щ?????????1??????????????????????????????ò??????????????????????????齱???????????????????????????????????????????????????????????????????????????

????6??????????????????……??????????????????????????????????????????????????????????????????????????????????

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