1 |
a |
1 |
x |
A.正数 | B.负数 | C.零 | D.非负数 |
1 |
a |
1 |
a |
1 |
a |
1-a2 |
a |
(1+a)(1-a) |
a |
(1+a)(1-a) |
a |
2 |
x |
A.y1<y2<y3 | B.y2<y3<y1 | C.y1<y3<y2 | D.y3<y2<y1 |
2 |
x |
A.y3<y2<y1 | B.y1<y2<y3 | C.y2<y1<y3 | D.以上都不对 |
1-3m |
x |
A.m>0 | B.m<0 | C.m<
| D.m>
|
5 |
x |
A.y1<y2<y3 | B.y2<y1<y3 | C.y3<y2<y1 | D.y1<y3<y2 |
k |
x |
k |
x |
A.(-3,6) | B.(-2,9) | C.(3,6) | D.(2,-9) |
© 2017-2019 超级试练试题库,All Rights Reserved.