OA |
a |
OB |
b |
OC |
c |
a |
b |
c |
0 |
a |
b |
b |
c |
c |
a |
a |
b |
c |
A.2
| B.2
| C.3
| D.3
|
a |
b |
c |
0 |
a |
b |
b |
c |
c |
a |
a |
b |
c |
a |
b |
c |
b |
c |
c |
c |
2 |
b |
a |
c |
b |
c |
b |
b |
b |
a |
b |
2 |
a |
b |
c |
2 |
OA |
OB |
OC |
0 |
A.
| B.
| C.
| D.2
|
a |
b |
c |
a |
b |
c |
0 |
a |
b |
c |
a |
b |
b |
c |
c |
a |
A.-11 | B.-12 | C.-13 | D.-14 |
a |
b |
c |
c |
a |
b |
c |
π |
3 |
e1 |
e2 |
e1 |
e2 |
e1 |
e2 |
CD |
e1 |
e2 |
GH |
a |
i |
j |
b |
i |
j |
a |
b |
a |
b |
A.-2 | B.2 | C.-
| D.不存在 |
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