һx 25⣬?25xxx÷ÿСⱶУֻһȷ𰸡댢xĴS?BUӦϢ
1.ӳI(y)ṹǷȃe}w?
A.?/P>
B.fϢ
C.ʲ
D.
_SD
עBCDǷӳI(y)CָݏѡLӳI(y)Ϣʲlr̶_淏GծȨʲʾᘋȽ̶sʽԳKij
2.I(y)ֱ19971200.26Ԫ19981507.73Ԫ19991510.43Ԫ20001621.49Ԫ20011795.71Ԫ۸I(y)2001rƽ
A.5%
B.6%
C.7%
D.8%
_SB
עrƽ
3.ijI(y)ÿ30Ԫ10%5\ͽ?ԪP/A10%5=3.7908P/A10%6=4.3553F/A10%5=6.1051F/A10%6=7.7156
A.150
B.183.153
C.189.561
D.201.468
_SD
עΪֵĹ{=30×F/A10%6-1=30×7.7156-1=201.468 F=30×F/A10%5×1+10%=30×6.1051×1+10%201.468.