已知l、n是两条不同的直线,
、
是不重合的两个平面,则下列命题中正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.若![]() ![]() ![]() ![]() | B.若![]() ![]() ![]() |
C.若![]() ![]() ![]() | D.若![]() ![]() ![]() |
2024·广东惠州·一模 查看更多[2]
更新时间:2024-05-31 16:35:35
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【推荐1】已知直线
平面
,直线
平面
,则下列四个命题正确的是
①
;②
;③
;④
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a9df740160690029ac1e730c85f20347.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d983307d4345e724d9dd44935274843d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12a913b9556181ace2c34ac832fa712a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b26dd829b0bf9f1f6a54c3a9d24d1c2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c081b307c71fa53c59cfa2fab24fdb16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f15c1dcfe904887c3df8423944f80fb2.png)
A.②④ | B.①② | C.③④ | D.①③ |
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【推荐2】如图,在长方体
中,
,点M是棱
的中点,点N在棱
上,且满足
,P是侧面四边形
内的一动点(含边界),若
平面
,则线段
长度的取值范围是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/99b69905-4bbd-45a3-892c-fb25aff900b5.png?resizew=173)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6dcb284786b7670009d2b9471c559525.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2777840758e70e7dbbc18cef8f3d6d2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58eb7e7cce61e556ad46e0477e34a5f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ebb05874eb3353d754af24c9974273e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d901e6127c96d778f1451bb98a49c962.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/70db40c42655327adee01caedfc9d50c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c407eeb34204a1df967b8fbe481cb04d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/14/99b69905-4bbd-45a3-892c-fb25aff900b5.png?resizew=173)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐1】在长方体
中,
,若棱
上存在一点
,使得
⊥
,则棱
的长的取值范围是
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/35909b72f6e48a33ae9abb1d63ff91aa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c798204bbe306b3efd5bc9eae594c171.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://img.xkw.com/dksih/QBM/2017/9/27/1783120127754240/1783882296000512/STEM/4857d9e3314b426486ffb7d05690ec00.png?resizew=3)
A.![]() | B.![]() | C.![]() | D.![]() |
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【推荐2】已知球的直径
,A、B是该球球面上的两点,
,
,则三棱锥
的体积为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32f7e633fb547fd821e5a3cbf1bd1f48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68b40d0d2f3cdd8981bb792ad87efb42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d18f11eaebee6480f29838eafbb6282.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/41e5db1d2fd912f77923e4c120a7dc19.png)
A.![]() | B.3 | C.![]() | D.![]() |
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解题方法
【推荐3】如图,在正方体
中,
分别为棱
的中点,
为正方形
的对角线
与
的交点,则下列结论不正确的是( )
![](https://img.xkw.com/dksih/QBM/2022/5/6/2973606468370432/2974203389001728/STEM/fd160214-9996-4d19-a553-65dd72dd76eb.png?resizew=173)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e09725691ee7851f54c0dee86b2bf55.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19b3da308c73188350fb0f836952beea.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://img.xkw.com/dksih/QBM/2022/5/6/2973606468370432/2974203389001728/STEM/fd160214-9996-4d19-a553-65dd72dd76eb.png?resizew=173)
A.![]() ![]() | B.![]() ![]() |
C.![]() ![]() | D.![]() ![]() |
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解题方法
【推荐1】
是两个不同的平面,
是平面
及
之外的两条不同直线,给出四个论断:
①
②
③
④![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0210d76c644711d2dbcef15520ed8f02.png)
以其中三个论断作为条件,余下一个作为结论,其中正确命题的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc14778010a33f90902ff17b1ec0ac73.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0877194ab8760f54c35527177b03ff93.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e737aa3f72c9584f068304a4daf0bae2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a602f0fe98345b79bb73578cb29d9076.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a4be90d93b91b56d7765c1f96b55c16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0210d76c644711d2dbcef15520ed8f02.png)
以其中三个论断作为条件,余下一个作为结论,其中正确命题的个数是( )
A.1个 | B.2个 | C.3个 | D.4个 |
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【推荐2】设
,
是两个不同的平面,m,n是两条不同的直线,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
A.若![]() ![]() ![]() |
B.若![]() ![]() ![]() ![]() |
C.若![]() ![]() ![]() ![]() |
D.若![]() ![]() ![]() ![]() |
您最近一年使用:0次