f(a) |
a |
f(b) |
b |
f(c) |
c |
A.
| B.
| ||||||||||||
C.
| D.
|
f(a) |
a |
f(b) |
b |
f(c) |
c |
f(c) |
c |
f(b) |
b |
f(a) |
a |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
a3+a9 |
2 |
log29 |
log23 |
A.5 | B.10 | C.20 | D.2或4 |
1 |
2 |
1 |
2 |
A.n<m<1 | B.m<n<1 | C.1<m<n | D.1<n<m |
1 |
2 |
1 |
3 |
1 |
5 |
A.z<x<y | B.x<y<z | C.y<z<x | D.z<y<x |
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