1 |
x-1 |
A.(2,+∞) | B.(0,+∞) | C.(0,2) | D.(0,1) |
1 |
x-1 |
1 |
x-1 |
1 |
x-1 |
A.∀x∈[1,2],x2-1≤0 | B.∃x∈[1,2],x2-1≥0 |
C.∀x∈[1,2],x2-1≥0 | D.∃x∈[1,2],x2-1≤0 |
A.∀x∈R,x2-2x+4≥0 | B.∃x∈R,x2-2x+4>0 |
C.∀x∉R,x2-2x+4≤0 | D.∃x∉R,x2-2x+4>0 |
A.0 | B.1 | C.2 | D.3 |
© 2017-2019 超级试练试题库,All Rights Reserved.