真题
1 . 已知气候温度和海水表层温度相关,且相关系数为正数,对此描述正确的是( )
A.气候温度高,海水表层温度就高 |
B.气候温度高,海水表层温度就低 |
C.随着气候温度由低到高,海水表层温度呈上升趋势 |
D.随着气候温度由低到高,海水表层温度呈下降趋势 |
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2 . 复数
(
为虚数单位),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e9c3d509e77d6a7e4874302308c2aba.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aeefdde19b27c562a7110fb0c3908061.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e9c3d509e77d6a7e4874302308c2aba.png)
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3 . 已知复数
(i是虚数单位),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e0aeeb125cfb42e33094594d4381f5.png)
______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba5d00ceb140c0d53b9e7082437f0d16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c7e0aeeb125cfb42e33094594d4381f5.png)
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4 . 设复数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882bff376e1d71865bd23b747ef78a66.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09981dba3f255cae81ec07f6bca2ad04.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/882bff376e1d71865bd23b747ef78a66.png)
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5 . 对于复数
(
是虚数单位),![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbc566bdcdfc809a6e57efbe9cb0a02.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0180da76975d8a19f26649b13ba4529.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/579743813856e2a9183f5ec6eaaefbb2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccbc566bdcdfc809a6e57efbe9cb0a02.png)
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6 . 设
(
为虚数单位),若z为纯虚数,则实数m的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/22560b591e125d6a19cdaaacbd87d769.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
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7 . 已知复数
满足
,则
的模为___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e81e59019989b7dc2fb59b037ef6e010.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ff956775e20198ad49cd50d8fc1d5d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d41042207515dd2e8349c805e6aee400.png)
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8 . 已知复数
(
为虚数单位),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d7b39dbe165cabe9261838acbaa92d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b2d67321ace1e6b3be0fc0e5e8130022.png)
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9 . 已知复数
,其中
为虚数单位,则
在复平面内所对应的点的坐标为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d971e248bd035650f7fc77adaea2ba1f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5fcfebd9f5a57036e6df6b6e14865da3.png)
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10 . 已知
是虚数单位.则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28f1ecb23d529aa363dc17f805be8de.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3a7035cd4adda5d72a9fc9f9fda75995.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c28f1ecb23d529aa363dc17f805be8de.png)
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