51IҪIˮƽжˮƽĹϵ
Aߺϵ
B
CǰߵՊ
Dǰ߸Պ
52ijƷĹС3ɣr?65/m3m3/
A462
B195
C154
D051
53ijʩеr?391_/100m3֮ϵĹС4ˣ]еIJm3/_?BR>A64
B064
C256
D256
54Iģ
A̶ʲ
Bʲ
Cʲ
Dʲ
55йĿ嵥˔ȷ?BR>AͶTеĿб
BͶ˲бĿ
CͶ˲Ŀ嵥Д?BR>DyzĿ嵥Д?/P>
56иͬй̶ʲ?BR>A̶ʲ
BI̶ʲ
C̶ʲ
DI̶ʲ
57Iҵʽ?BR>A
BͬIʽ
CԻՁ
DƷ
58IԜԳͶֵм飬ڣһ?BR>Aÿĩ
Bÿĩ
Cÿĩ
D?/P>
59ijɷ˾һ_豸?00000Ԫֵ5%ʹ5zҵѡܺͷf4۾ɶԪ
A38000
B22000
C17000
D19000
60i1=2i2,n1=n2/2Pͬr
A_F/Pi1,n1루F/P,i2,n2ĴСϵ
BF/Pi1,n1(F/P,i2,n2)
CF/Pi1,n1=(F/P,i2,n2)
DF/Pi1,n1(F/P,i2,n2)