10-11高三·江西·单元测试
1 . 若
则
的值为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/517cb66213ea69f52defa308313ea186.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ab0a96b1735f58f9c745ec3ad52888c9.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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真题
2 . 已知平面向量a=
,b=
,则向量![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
A平行于
轴
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be41af7122ab98a76cebd1785b1a195c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8cd6cd5033c8c29d6b5507116e4a75c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
A平行于
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
A.平行于第一、三象限的角平分线 | B.平行于![]() |
C.平行于第二、四象限的角平分线 |
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