OA |
a |
OC |
b |
OO1 |
c |
a |
b |
c |
OG |
A.
| B.
| C.
| D.
|
OA |
a |
OC |
b |
OO1 |
c |
OG |
1 |
2 |
OA1 |
1 |
2 |
OC1 |
1 |
2 |
OA |
AA1 |
1 |
2 |
OC |
CC1 |
1 |
2 |
OA |
1 |
2 |
OC |
1 |
2 |
AA1 |
1 |
2 |
CC1 |
1 |
2 |
OA |
1 |
2 |
OC |
OO1 |
1 |
2 |
a |
b |
c |
a |
a |
x |
x |
A.不存在 | B.-2 | C.(-4,2,-4) | D.(4,-2,4) |
1 |
x |
A.(0,
| B.(0,
| C.(-∞,0)∪[
| D.(-∞,0]∪[
|
AC |
BC |
0 |
a |
b |
c |
a |
b |
c |
AB |
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