|PF| |
|PD| |
|QF| |
|BF| |
|AO| |
|BO| |
|AF| |
|BA| |
|FO| |
|AO| |
x2 |
a2 |
y2 |
b2 |
|PF| |
|PD| |
a2 |
c |
b2 |
c |
b2 |
a |
|QF| |
|BF| |
c |
a |
a2 |
c |
|AO| |
|BO| |
c |
a |
|AF| |
|BA| |
|FO| |
|AO| |
c |
a |
x2 |
a2 |
y2 |
b2 |
A.-
| B.-
| C.-
| D.-
|
x2 |
16 |
y2 |
9 |
A.0<a<1 | B.
| C.
| D.0<a<
|
A.(0,±
| B.(±
| C.(0,±
| D.(±1,0) |
© 2017-2019 超级试练试题库,All Rights Reserved.