2013年成人高考高起点《数学(文)》权威预测试卷一
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- 1
-

- 8
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函数y=x3+2x2-x+1在点(0,1)处的切线的倾斜角为( )
(
- A)<img src="//img1.yqda.net/question-name/d3/f2c8c
- be323bf63e7b0
- c7
- dc8aa976b5.jpg" alt="" /> (B)<img src="//img1.yqda.net/question-name/dd/4b2cb2f85d8217280aa8d464ff958b.jpg" alt="" /> (C)<img src="//img1.yqda.net/question-name/19/6f1ab28d994e2bb40120ba49a0b1d1.jpg" alt="" />
- 12
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从一副52张扑克牌中,任抽一张得到黑桃的概率是( )
(
- A)<img src="//img1.yqda.net/question-name/da/5566
- be8ff431db
- c121548b
- d2308053.jpg" alt="" /> (B)<img src="//img1.yqda.net/question-name/74/cd2e2055d82322ad7e8e7650217f70.jpg" alt="" /> (C)<img src="//img1.yqda.net/question-name/b4/f0d346fa0cf59a70ca3e0841e95fa3.jpg" alt="" />&n
- 14
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函数y=-x(x-1)( )
(
- A)有最小值1 (
- B)有最小值-1 (
- C)<img src="//img1.yq
- da.net/question-name/91/01543bcb865ccb91c2fd49390024d9.jpg" alt=""> (D)<img src="//img1.yqda.net/question-name/4e/31715517dbd6edba3e021ab82fc5f4.jpg" alt="">
- 15
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设x,y是实数,则x2=y2的充分必要条件是( )
- A.x=y
- B.x=-y
- C.x<sup>3</sup>=y<sup>3</sup>
- D.<img alt="" src="//img1.yqda.net/question-name/58/b718e8886e9a9900e5a6c20aaf9c35.jpg"/>
- 17
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下列函数中,为奇函数的是( )
(
- A)y=㏒3x (
- B)y=4x (
- C)y=3x<sup>2</sup> (
- D)y=3sinx
- 20
-
若θ∈(0,2π),则使sinθ
- anθ成立的θ的取值范围是( ) (A)<img src="//img1.yqda.net/question-name/8f/170c69c940a
- bf2530
- cda12a8068
- de2.jpg" alt="" /> (B)<img src="//img1.yqda.net/question-name/e7/6baf332336a90c09c53a3a49b0318d.jpg" alt="" /> (C)<img src="//img1.yqda.net/question-name/58/ac4568bac8ae6adf6698c90b86d1a6.jpg" alt="" /> &
- 22
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如果一次函数y=kx+b的图像经过点
- A(1,7)和8(0,2),则k=( ) (A)-5 (
- B)1 (
- C)2 (
- D)5