k |
x |
k |
x |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
k |
x |
4 |
x |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
1 |
2 |
3 |
2 |
9 |
4 |
45 |
4 |
1 |
4 |
65 |
4 |
5 |
45 |
4 |
3
| ||
2 |
1 |
2 |
1 |
2 |
5 |
3
| ||
2 |
15 |
4 |
A. | B. |
C. | D. |
k |
x |
A.-2 | B.4 | C.3 | D.2 |
k |
x |
k |
x |
k |
x |
A.S△ADB>S△ACB | B.S△ADB<S△ACB |
C.S△ADB=S△ACB | D.不确定 |
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