设集合![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
,
=
,则
子集的个数是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5f1e5d29de6e4d72bfed62d9c14dde5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a57aa489a20911ff391a5329bc366f9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5c3a6426629aa4007b5fbf2660f1a98e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.2 | B.3 | C.4 | D.8 |
更新时间:2016-12-03 14:40:51
|
相似题推荐
单选题
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较易
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名校
【推荐2】设集合
,
,则
的子集个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba8fa8ef727ea511762c9f2f66d49b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/32de2d8f116a9244cc4a5e21e5ec6d23.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8fdbfa7a63fdf5717d40c8c9a73ec160.png)
A.2 | B.4 | C.8 | D.16 |
您最近一年使用:0次
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解题方法
【推荐1】过坐标原点O作两条互相垂直的直线OA,OB,点A,B(异于点O)均在圆
上,则
面积的最大值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2ca0fb9cc2733d708ae089b37bf3794.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
A.26 | B.![]() | C.13 | D.![]() |
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【推荐2】已知抛物线
上一点P,直线
,过点P作
,垂足为A,圆
上有一动点N,则
最小值为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/432910a76a96d21b2c2245ab876ac4b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb9a6aafcd3a93f5619c904ad12c02f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb50782b4a4f59f8798a90086b0d5c6b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6b94e5db1fdd66ae91b15223edbb5084.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b4664a21f8fb4fe5f54312211c53dcfc.png)
A.2 | B.4 | C.6 | D.8 |
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【推荐1】函数
的图像大致为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e635a15e25a2494931cc03af5ae02f80.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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【推荐2】命题
,命题
,则下列命题为真命题的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27dcec2a1028a9dd86a317de43f171cd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f12364ff77e8aed0833d4507b104524.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次