我
- 2
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- 4
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- 6
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- 7
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- 8
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- 10
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- 11
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- 12
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- 14
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- 15
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- 16
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- 18
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- 19
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- A. 充分条件
- B. 必要条件
- C. 充要条件
- D. 既不充分也不必要的条件
- 20
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- 21
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- A. (0，1)
- B. (0，2)
- C. (2，O)
- D. (2，1)
- 22
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- A.<img src="//img1.yqda.net/question-name/a6/5a4548bc9e2a97f72f1ab0ca618b65.jpg" alt="" border="0" />
- B.<img src="//img1.yqda.net/question-name/99/4ced2e1753d18ec2500d87a4b0d6a4.jpg" alt="" border="0" />
- C.<img src="//img1.yqda.net/question-name/a5/936d6ed6c0eeca1357364af8f64ec4.jpg" alt="" border="0" />
- D.<img src="//img1.yqda.net/question-name/45/f3d794e45df495525ecac250b26cff.jpg" alt="" border="0" />
- A. 3
- B. 9
- C. 84
- D. 504
- 24
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下列各式正确的是（ ）
- A.<img src="//img1.yqda.net/question-name/b3/196cd526bc2af6e3b937f2776d598b.jpg" alt="" border="0" />
- B.<img src="//img1.yqda.net/question-name/bf/200922c6808ae5d9a21fea63aaf5fc.jpg" alt="" border="0" />
- C.<img src="//img1.yqda.net/question-name/33/6e1181da8da0aa85289ed377c35d6f.jpg" alt="" border="0" />
- D.<img src="//img1.yqda.net/question-name/a4/b27eaa9dc2e431ccf64cb1f2e98082.jpg" alt="" border="0" />
- 26
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- A. 0
- B. 1
- C. 2
- D. 不存在
- 27
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- A. -4
- B. -2
- C. 2
- D. 4
- 28
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- A.<img src="//img1.yqda.net/question-name/d6/697489a7621888cc345f83f916c074.jpg" alt="" border="0" />
- B.<img src="//img1.yqda.net/question-name/bb/8babf363dc0b1afa30e9f102867de6.jpg" alt="" border="0" />
- C.0
- D.1
