2012年成人高考《数学(理工农医类)高起点》冲刺试卷(4)
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11、
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A. (11,9)
B. (4,0)
C. (9,3)
D. (9,-3)
12、 若α=2009°,则下列命题正确的是( )
A. cosα>0,tanα>0
B. cosα>0,tanα<0
C. cosα<0,tanα>0
D. cosα<0,tanα<0
13、
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14、
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A.
B. 2π
C. 4π
D. 8π
15、 在△ABC中,已知AB=5,AC=3,∠A=120°,则BC长为
A. 7
B. 6
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D.
16、 设f(x)是以7为周期的偶函数,且f(-2)=5,则f(9)=( )
A. -5
B. 5
C. -10
D. 10
17、
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A.
B. 1
C. 2
D.
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A. (11,9)
B. (4,0)
C. (9,3)
D. (9,-3)
12、 若α=2009°,则下列命题正确的是( )
A. cosα>0,tanα>0
B. cosα>0,tanα<0
C. cosα<0,tanα>0
D. cosα<0,tanα<0
13、
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14、
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A.
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B. 2π
C. 4π
D. 8π
15、 在△ABC中,已知AB=5,AC=3,∠A=120°,则BC长为
A. 7
B. 6
C.
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D.
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16、 设f(x)是以7为周期的偶函数,且f(-2)=5,则f(9)=( )
A. -5
B. 5
C. -10
D. 10
17、
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A.
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B. 1
C. 2
D.
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