1 |
x |
2 |
y |
3 |
z |
3 |
x |
2 |
y |
1 |
z |
1 |
x |
1 |
y |
1 |
z |
1 |
x |
2 |
y |
3 |
z |
3 |
x |
2 |
y |
1 |
z |
4 |
x |
4 |
y |
4 |
z |
1 |
x |
1 |
y |
1 |
z |
1 |
x |
1 |
y |
1 |
z |
1 |
a+1 |
a |
a+1 |
x |
x+y |
y |
y+x |
1 |
R |
1 |
R1 |
1 |
R2 |
1 |
R |
1 |
r1 |
1 |
r2 |
A.R=r1+r2 | B.R=r1r2 | ||||||
C.
| D.R=
|
A.甲比乙便宜 | B.乙比甲便宜 |
C.甲与乙相同 | D.由m的值确定 |
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