1 |
a |
1 |
b |
1 |
ab |
A.0个 | B.1个 | C.2个 | D.3个 |
1 |
a |
1 |
b |
1 |
ab |
A.p或q为真 | B.p且q为真 | C.非p为真 | D.非q为假 |
A.若a>b,则a2<b2 | B.若a>b,则a2≤b2 |
C.若a<b,则a2<b2 | D.若a≤b,则a2≤b2 |
A.p∧(¬q) | B.(¬p)∧q | C.(¬p)v(¬q) | D.p∧q |
1 |
2 |
A.若a+b≠1,则a2+b2<
| B.若a+b=1,则a2+b2<
| ||||
C.若a2+b2<
| D.若a2+b2≥
|
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