AB |
BD |
AC |
CD |
A.
| B.
| C.
| D.
|
AB |
BD |
AC |
CD |
AB |
BD |
AC |
CD |
AD |
AD |
0 |
3 |
π |
2 |
BA |
BC |
AC |
A.[1,+∞) | B.[
| C.(-∞,
| D.(-∞,0]∪[1,+∞) |
AB |
AC |
BD |
CD |
AD |
AB |
BC |
CA |
AB |
AC |
BD |
CD |
OA |
OD |
AD |
NQ |
QP |
MN |
MP |
0 |
AB |
AB |
BC |
AC |
AM |
MB |
BC |
AM |
BM |
CM |
AM |
AC |
OP |
QP |
PS |
SP |
A.
| B.
| C.
| D.
|
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