CB |
PB |
PA |
A.AC边所在的直线上 | B.BC边所在的直线上 |
C.AB边所在的直线上 | D.△ABC的内部 |
CB |
PB |
PA |
PB |
PC |
CB |
CB |
PC |
CB |
PA |
PC |
PA |
CP |
PA |
CP |
PA |
A.5 | B.6 | C.7 | D.8 |
a |
b |
AB |
a |
b |
AC |
a |
b |
A.λ+μ=2 | B.λ-μ=1 | C.λμ=-1 | D.λμ=1 |
AB |
a |
b |
BC |
a |
b |
CD |
a |
b |
A.A、B、D三点共线 | B.A、B、C三点共线 |
C.B、C、D三点共线 | D.A、C、D三点共线 |
an |
2n |
a |
b |
a |
b |
A.
| B.-
| C.±
| D.2 |
© 2017-2019 超级试练试题库,All Rights Reserved.