A.y=sinx+cosx是周期函数 |
B.1是方程x2-1=0的根 |
C.15能被3或4整除 |
D.梯形是等腰梯形 |
2 |
π |
4 |
1 |
a |
A.①② | B.②③ | C.③④ | D.②④ |
A.若a>b,则ac>bc | B.若a>b>0,则a2>b2 | ||
C.若|x-3|>1,则2<x<4 | D.若
|
a |
b |
c |
b |
0 |
b |
0 |
a |
b |
0 |
a |
0 |
b |
0 |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
b |
a |
c |
a |
0 |
b |
c |
A.1 | B.2 | C.3 | D.4 |
a99-1 |
a100-1 |
A.①②④ | B.②④ | C.①② | D.①②③④ |
A.①② | B.①③ | C.②③ | D.①②③ |
© 2017-2019 超级试练试题库,All Rights Reserved.