a |
b |
a |
b |
13 |
a |
b |
A.
| B.
| C.
| D.
|
a |
b |
a |
b |
13 |
a |
b |
a |
b |
a |
b |
1 |
2 |
π |
3 |
a |
b |
a |
b |
a |
b |
c |
a |
c |
A.150° | B.90° | C.60° | D.30° |
a |
b |
a |
3 |
4 |
a |
b |
b |
b |
q |
π |
2 |
p |
C |
2 |
2 |
3 |
b |
p |
a |
b |
a |
b |
a |
b |
A.2 | B.-2 | C.2或-2 | D.0 |
a |
b |
π |
3 |
a |
b |
a |
b |
c |
π |
3 |
a |
c |
3 |
8 |
π |
4 |
a |
b |
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