|a| |
a |
|b| |
b |
|c| |
c |
A.-3,-1,1,3 | B.-1,-3,1 | C.1,-3 | D.1,3 |
9 |
x-1 |
0.3 |
10(x-1) |
3 |
A.0个 | B.1个 | C.2个 | D.4个 |
A.3 | B.0 | C.1 | D.以上都不对 |
A.若a是有理数,则|a|-a=0一定成立 |
B.两个有理数的和一定大于每个加数 |
C.两个有理数的差一定小于被减数 |
D.0减去任何数都等于这个数的相反数 |
A.-125 | B.+23 | C.-3.5 | D.0 |
© 2017-2019 超级试练试题库,All Rights Reserved.