2013年成人高考高升本《理科数学》模拟试卷(4)
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- 7
-

- 9
-

- 10
-

- A.{x
- B.x<3,x∈R}
- C.{x
- D.x>-1,x∈R}
- E.{x
- F.-1<x<3,x∈R}
- G.{x
- H.x<-1或x>3,x∈R}
- 11
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- 12
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- A.{2,-1,-4}
- B.{-2,1,-4}
- C.{2,-1,0}
- D.{4,5,-4}
- 16
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已知正方形ABCD,以A,C为焦点,且过B点的椭圆的离心率为( )
- A.<img src="//img1.yqda.net/question-name/07/67a783bac7573dec07b8e9dbc6bddd.jpg" alt="" />
- B.<img src="//img1.yqda.net/question-name/1b/176d91deb3ec413c886b50374f769e.jpg" alt="" />
- C.<img src="//img1.yqda.net/question-name/ea/3d939735a586a033423f1cc06208ba.jpg" alt="" />
- D.<img src="//img1.yqda.net/question-name/03/6b6034a8d642c138b2aa8e40ece007.jpg" alt="" />
- 19
-

- A.3/20
- B.1/5
- C.2/5
- D.9/20
- 20
-

- 22
-

- 25
-

- A.α≤-4
- B.α≥-4
- C.α≥8
- D.n≤8