a+6 |
a |
b+3 |
b |
c+2 |
c |
1 |
6 |
1 |
6 |
a+2b+3c |
3 |
4 |
3 |
2 |
3 |
4 |
3 |
a+6 |
a |
b+3 |
b |
c+2 |
c |
6 |
a |
3 |
b |
2 |
c |
6 |
a |
3 |
b |
2 |
c |
6 |
6 |
6 |
6 |
a |
3 |
b |
2 |
c |
a+6 |
a |
b+3 |
b |
c+2 |
c |
A.x,y均为正数,则
| ||||||
B.a为正数,则(
| ||||||
C.lgx+
| ||||||
D.
|
A.4 | B.5 | C.6 | D.7 |
A.5米 | B.5.5米 | C.6米 | D.6.5米 |
3 |
1 |
a |
1 |
b |
A.1 | B.2 | C.8 | D.4 |
x2+4 | ||
|
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