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1 . 直线和平面所成的角的范围为
.( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/71b77857e15ae11fc94a5e33bfc12d26.png)
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2 .
是
的充分不必要条件. ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2600a54b7bf3f79aaec7d49a47f6b4d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ebe88898a099a43f5bcc018ad7003ec2.png)
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3 . 若
,则
._____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d36d2633119c6176229061d3dc23a70.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13baaa9276c276ab24b3310050ce79f7.png)
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4 . 第二象限的角都是钝角._____
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5 . 不等式
的解集是
._____
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235aa9ff43681f1a5cbc940019c172e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d7f61431dbbeb00693660faf7245c2f.png)
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6 . 函数
的定义域为![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ca543ad54da566e2befd9f1fc64ed2ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a43b2faa4f81f32d94612dce724e772b.png)
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7 .
是
的充分不必要条件( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83455d9448b63a6eae1565280d6a6111.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/84111bc3ad9247785ee53f306d1250bc.png)
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8 . 若
是全集
的一个非空子集,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4411598e6ff48451beba0dcf3131e460.png)
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf231f8f86fb922df4ca0c87f044cec3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4411598e6ff48451beba0dcf3131e460.png)
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9 . 当
时,
的最小值为4 ( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ad8175214b7ae238425e65c09a2db1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f53700984a41d6757e97dbac2b1beaa9.png)
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10 . 若向量
,则
或
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c05f1d68b133c5d2f76a06186e0ffb08.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58ce380bce6978d2acd0742bed4e98e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1ecfaf651f46c6915a3f463d67ec0e5c.png)
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