??????1????????????

??????

1.????????????

A.???????——????????????????檔

????????????????????(?С???????18522)????????????????????t???????????(18522+1190+11=19723)????????С???????????????????????????????????????????????

???????(??????)=δ??????*(1+?????)

???????????????????????????ū??????????????????δ?????????Щ?????й??????????Ρ?

2.?????????????

B.?????????????????????????????????????????????????????????????Щ?????й??

a.??????й??????????????

b.??????????“???污?”???????????????????????????й??

?????????????ū??0?????????δ???????????0.

c.??????????????????????????,???o????????????????1??棬????“?????????????????????”???“???”?????

?????????ó????????ū??????????GM?????ū????????GM?????????????к??μ??……???!!

????????????????????????????????????й??

3.???2?ù????

C.????????????????????????????????????У?

??????????+???????????=δ???????

???????????????????????????????????1.

?????????2?

?????????????????=??????*???*0

???o???????????=??????*???*1

????????????????????????????????1??????

????2?

???????????=???????*???*x%

PS?????2????????????????????????

4.?????????????

D.?????????????????????x???????????

????????????????????????(???????5)????????????(???????10)??

δ??????=1108x+1480=20852/(1+0.36)≈15332

x=(15332-1480)/1108=12.5018≈12.5

????????????????????????12.5??

5.???????????

?????????????д???????????

????????????????????=(???????*12.5+??????)*???*(1+?????)-????-н?