?????????QQ????????????? QQ???????????????? QQ???????÷??? QQ??????

QQ???????????????????????????????????????????!????С??????????????????????????!???????????????????????С?????????? ?????????????????????????

100???????????????????????

????????????????50%?????70% ??????60%??

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

??????????????λ??

?????????219÷0.6=365?

??????????18X5=90?

?????????20X18÷9=40? 20=9??????+5????+6?????????????????15??????????25???????á?

????????365-90-40=235?

?????????????25% ?????????200????????????????????????????????? ?????????????????ο??????????

????????y???

15X(26+5+3+6+2)+5X7+13X5+1X3=733????

15??X(26??????+5????????+6????С??+2??????????????) ?630????

5X7?????????????????????35????

13X5+1X3???????????????????????????68????

???????????????????????????????????3??????

733-3X15=688???? ??????????????

688????????????235??????

???? ??? ????25%???? 4????=1???

688X0.25=172????

??????????190?

????????????150?

??????170

235-170=64????????????????64???ζ????

15??????????????183?????????????52??????ζ????

??????? ??? ????35%????

688X0.35=240????

?????????????40407QQ?????http://audiogearreviews.com/qqsh/