a |
b |
a |
b |
a |
b |
π |
3 |
OA |
a |
b |
OB |
a |
b |
A.
| B.
| C.
| D.
|
OA |
(2
|
4
|
4×12+4×1×1×
|
7 |
OB |
(3
|
9
|
9×12-6×1×1×
|
7 |
OA |
OB |
a |
b |
a |
b |
a |
a |
b |
b |
1 |
2 |
11 |
2 |
| ||||
|
|
| ||||
|
11 |
14 |
1-(
|
5
| ||
14 |
1 |
2 |
OA |
OB |
1 |
2 |
7 |
7 |
5
| ||
14 |
5
| ||
4 |
a |
a |
b |
a |
c |
b |
c |
a |
b |
a |
c |
b |
c |
a |
a |
b |
c |
a |
b |
c |
a |
b |
c |
a |
a |
a |
OP1 |
OP2 |
OP1 |
OP2 |
AE |
AF |
a |
b |
a |
b |
a |
b |
a |
b |
CE |
CF |
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