题目列表(包括答案和解析)
| a |
| a |
| ||||
|
| ||
|
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| a |
| b |
| b |
| a |
| b |
| b |
| a |
| e |
| a |
| e |
| a |
| a |
| e |
| a |
| a |
| a |
| a |
| a |
| b |
| b |
| c |
| a |
| c |
| a |
| b |
| b |
| c |
| b |
| 0 |
| a |
| c |
| OA |
| a |
| OB |
| b |
| a |
| b |
| OM |
| ||
|
|
| ||
|
|
| OM |
| a |
| a |
| ||||
|
| ||
|
| a |
| b |
| a |
| b |
| a |
| b |
| a |
| a |
| b |
| b |
| a |
| b |
| b |
| a |
| e |
| a |
| e |
| a |
| a |
| e |
| a |
| a |
| a |
| a |
| a |
| b |
| b |
| c |
| a |
| c |
| a |
| b |
| b |
| c |
| b |
| 0 |
| a |
| c |
| OA |
| a |
| OB |
| b |
| a |
| b |
| OM |
| ||
|
|
| ||
|
|
| OM |
已知
=a,
=b,且它们均为单位向量,则∠AOB的平分线上的单位向最
为
A.
+![]()
B.![]()
C.![]()
D.![]()
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