解题方法
1 . 已知一个三棱锥的体积和表面积分别为
,若
,则该三棱锥内切球的表面积为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36e7ea8c9d3b95ede8d08f73dee44ea1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd2ddcdeaee694e80c6a0b47cc8cc665.png)
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2017-02-08更新
|
356次组卷
|
3卷引用:2017届河北磁县一中高三11月月考数学(理)试卷
2 . 已知
的
![](https://img.xkw.com/dksih/QBM/2017/1/5/1619443479822336/1619443479912448/STEM/b5757838d46845f790d62c794ecfcc33.png)
A.充分不必要条件 | B.必要不充分条件 |
C.充要条件 | D.既不充分也不必要条件 |
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3 . 在
中,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0faed94a64b2dcfc6801b4fca0f16675.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a4582616e2e7aa41381e32a022c17052.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1f9fabbbe61a759e52ec975215e2e7c.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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4 . 已知
,且向量
,则
等于
![](https://img.xkw.com/dksih/QBM/2016/12/27/1619411074736128/1619411074883584/STEM/5d77d82053f84aad85d70c595ad8f357.png)
![](https://img.xkw.com/dksih/QBM/2016/12/27/1619411074736128/1619411074883584/STEM/7ecfed0764624141a8f26c022f1580ac.png)
![](https://img.xkw.com/dksih/QBM/2016/12/27/1619411074736128/1619411074883584/STEM/e64243d6b9ec424296047a68f87f0fd8.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 下列四个命题中,正确的是
A.若![]() ![]() |
B.若![]() ![]() |
C.若![]() ![]() |
D.若![]() ![]() |
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6 . 在等比数列{an}中,a2=2,a4=8,则a6=
A.14 | B.28 | C.32 | D.64 |
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2016-12-05更新
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526次组卷
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2卷引用:2016-2017学年河北馆陶县一中高二上期中数学试卷
7 . 集合
,用列举法表示是
![](https://img.xkw.com/dksih/QBM/2016/11/20/1573161921454080/1573161927016448/STEM/6d2601c6df514ad9980fdc32f254a2c2.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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8 . 设集合
,集合
,则集合
的真子集个数
![](https://img.xkw.com/dksih/QBM/2016/11/20/1573161921454080/1573161927073792/STEM/f728b6be946e4c64afe495eeaeaffc1a.png)
![](https://img.xkw.com/dksih/QBM/2016/11/20/1573161921454080/1573161927073792/STEM/92c79542b4cd4b2ebe024ca37d17478a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
A.13 | B.14 |
C.15 | D.16 |
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9 . 已知
,且
为奇函数,若
,则![](https://img.xkw.com/dksih/QBM/2016/11/20/1573161921454080/1573161927213056/STEM/ed29cf386c7e4b6d889f3f6a83dd6b25.png)
![](https://img.xkw.com/dksih/QBM/2016/11/20/1573161921454080/1573161927213056/STEM/81d4237b337d464f96d8fe56460863e9.png)
![](https://img.xkw.com/dksih/QBM/2016/11/20/1573161921454080/1573161927213056/STEM/b3e5935a1c6348f6a4cfe25f98a110f3.png)
![](https://img.xkw.com/dksih/QBM/2016/11/20/1573161921454080/1573161927213056/STEM/876f501871d54981842c03a999d9bc37.png)
![](https://img.xkw.com/dksih/QBM/2016/11/20/1573161921454080/1573161927213056/STEM/ed29cf386c7e4b6d889f3f6a83dd6b25.png)
A.0 | B.-3 |
C.1 | D.3 |
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10 . 已知集合
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec37ff1e8eda033364d36308da03536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/144f4470ae1de6adfae01f6d10c14709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3864f744647a2890cb4202a953ff38e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ec37ff1e8eda033364d36308da03536.png)
A.{1,2,3} | B.{1,2} | C.{1} | D.{3} |
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2016-12-04更新
|
250次组卷
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2卷引用:2017届河北邯郸市高三9月联考数学(文)试卷