1 . 给出下列命题:
①直线l的方向向量为
,直线m的方向向量为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dedfa42c16dd0aefa2928a6e41f3dba.png)
②直线l的方向向量为
,平面
的法向量为
,则
.
③平面
,
的法向量分别为
,
,则
.
④平面
经过三点
,
,
,向量
是平面
的法向量,则
.
其中真命题的个数是( )
①直线l的方向向量为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc520546f7ed36f3dc300e86b5d8b8e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3857279c2f93b21c03c3c33c08053533.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dedfa42c16dd0aefa2928a6e41f3dba.png)
②直线l的方向向量为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df663f906a34b837d74c0940b18ed089.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/99212ca88f8ed54b0e9fcbfc9d552b3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e380108ba2cf04e68a5a9393d2b921c.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e86eec1a07e9547b778094ac2f3dc6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/777b4cabce2b79c1b0f3f740c455ab82.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b303b1f07604f5303aea94df7f0518e9.png)
④平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9976bb8d2b727e639df1dd47746cf90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f6f9d8550d619061ab0ba1105ec6a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df1b5e2746ca7dc60b89e43fe65a8baf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32a23d387abd15fdd9e61d96196e08f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5192d71829a74681e6dea7efcd368f88.png)
其中真命题的个数是( )
A.1 | B.2 | C.3 | D.4 |
您最近一年使用:0次
11-12高二上·陕西·期中
名校
2 . ①直线
的方向向量为
,
,
,直线
的方向向量为
,1,
,则
;
②直线
的方向向量为
,1,
,平面
的法向量为
,
,
,
,则
;
③平面
,
的法向量分别为
,1,
,
,0,
,则
;
④平面
经过三点
,0,
,
,1,
,
,2,
,向量
,
,
是平面
的法向量,则
.
其中真命题的序号是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18fa665058088f6c6be16685402c343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad217e26bd3580c35998109de14cef73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc52922828b27e42d57ee85a14d5182.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ea709f64feee0685af6cc6a675cfa113.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dedfa42c16dd0aefa2928a6e41f3dba.png)
②直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c298630ea352511026decd23862ec1d0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f079cef4435beed1e08999a2785bc9dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab67df2e7247ff2f2707357f1212a3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f079cef4435beed1e08999a2785bc9dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1754786a3367aca3da18ee3316e5b968.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e380108ba2cf04e68a5a9393d2b921c.png)
③平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd4563753d0be85acd13cafab4dd06d1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2324a65e345753fdd1db2354bfb0ee4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9a4cd372dd82d30eaa495944301243d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad217e26bd3580c35998109de14cef73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35f747152f006301e03b643afb80195c.png)
④平面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc2bcbc60ca431b3a3e853ae86fe6e08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f079cef4435beed1e08999a2785bc9dc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4570d7e5d38889506b89967c69d0ffb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72fb378d6bf91902efa15881985c5e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/650afd13b5215dd71cce0413171b414c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/72fb378d6bf91902efa15881985c5e69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab67df2e7247ff2f2707357f1212a3c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad481cbfb67ac9cdbc0537f3de23b022.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e84c72c32a70597a1c8ebd76afec9aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5192d71829a74681e6dea7efcd368f88.png)
其中真命题的序号是
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd995178601c2ad7b40f973d268c7bb7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04582116cd765fcc5a52f44279ad6c94.png)
A.②③ | B.①④ | C.③④ | D.①② |
您最近一年使用:0次
2016-12-01更新
|
111次组卷
|
5卷引用:河南省济源市第五中学2022-2023学年高二上学期期末数学试题
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