2012年成人高考《数学(文史财经类)》预测试卷(三)
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设
,则a的取值范围是( )
- A.0或a>1
- B.<img alt="" src="//img1.yqda.net/question-name/c7/b0d2181c63745aff8b04a10208521d.gif" />C.a>1
- D.0
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已知f(x)=1+
,则f(
)= ( )
- A.<img src="//img1.yqda.net/question-name/d1/167080dd9e484742dc50333ae995b4.gif" alt="" />
- B.3
- C.2
- D.1
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已知圆的半径为R,弧长为
的弧所对的圆心角等于( )
- A.<img alt="" src="//img1.yqda.net/question-name/94/3d8c5d693a5571f338695f881ac312.gif" />
- B.<img alt="" src="//img1.yqda.net/question-name/a3/bd738df6695f75f31312265b1cd5d5.gif" />
- C.1200
- D.<img alt="" src="//img1.yqda.net/question-name/16/9c2ec16e4e6523f36391a6b8c07d18.gif" />
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设COSα=-14且sinα<0,则cotα的值等于( )
- A.<img src="//img1.yqda.net/question-name/14/50172b03e9f5500f60aba974fbb17c.gif" alt="" />
- B.-<img src="//img1.yqda.net/question-name/49/55714d0e4960b81fc19872dc7aec80.gif" alt="" />
- C.<img src="//img1.yqda.net/question-name/b9/0f33d04479bcfe9fbacc9223a94825.gif" alt="" />
- D.-<img src="//img1.yqda.net/question-name/ee/abd31c6515e7f6d46a20f7d1022450.gif" alt="" />
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