太原理工大学
第一章单元测试
- Let , ,the expression of equals( ).
Suppose that U=R,A= , then ( ).
- All proper subsets of A= are ( )
- We know that A is a set of odd numbers, B is a set of even numbers, and Z is a set of integer numbers. Then =( ).
- Judge which expression is correct ( ).
If a>b ,then a-c>b-c .( )
If a=2- , , ,then ( ).
- If , , , ,then ( )
If a<b<0 ,c>0 ,then ( )
Suppose that 30<x<42 ,16<y<24 ,then the range of values of is ( ).
A: B: C: D:
答案:
A: B: C: D:
答案:
A: B: C: D:
答案:
A: B:Z C:B D:A
答案:
A: B: C: D:
答案:
A:对 B:错
答案:对
A: B: C: D:
答案:
A: B: C: D:
答案:
A: B: C: D:
答案:
A:(-6,10) B:(-18,-2) C:(-6,-2) D:(-18,10)
答案:(-18,10)
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