x |
x-1 |
x |
A.[0,1] | B.(0,1) | C.[0,1) | D.ϕ |
x |
x-1 |
x |
1 |
i |
2 |
A.(0,1) | B.(0,1] | C.[0,1) | D.[0,1] |
A.0 | B.1 | C.2 | D.0或1或2 |
x-1 |
4-x |
A.∅ | B.(3,4) | C.(-2,1) | D.[4,+∞) |
A.{x|-2<x<2} | B.{x|-2≤x≤2} | C.{x|-2≤x<2} | D.{x|-2<x≤2} |
A.A∩B=ϕ | B.(CRA)∪B=(-∞,0) |
C.A∪B=[0,+∞] | D.(CRA)∩B={-2,-1} |
© 2017-2019 超级试练试题库,All Rights Reserved.