OM |
ON |
3 |
2 |
A.2 | B.1 | C.
| D.
|
|
OM |
ON |
OM |
ON |
OE |
OM |
ON |
3 |
2 |
x1+x2 |
2 |
3 |
2 |
1 |
2 |
FA |
FB |
1 |
m |
1 |
n |
A.4 | B.8 | C.
| D.1 |
A.
| B.
| C.2
| D.以上都不对 |
A.无数多条 | B.3条 | C.2条 | D.1条 |
x2 |
m2 |
y2 |
n2 |
x2 |
m2 |
y2 |
n2 |
A.e1e2>e3 | B.e1e2<e3 |
C.e1e2=e3 | D.e1e2与e3大小不确定 |
A.
| B.
| C.-
| D.-
|
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