设集合P={3,log2a},Q={a,b},若P∩Q={0},则P∪Q= [ ] A.{3,0} B.{3,0,1} C.{3,0,2} D.{
题型:单选题难度:简单来源:山东省月考题
设集合P={3,log2a},Q={a,b},若P∩Q={0},则P∪Q= |
[ ] |
A.{3,0} B.{3,0,1} C.{3,0,2} D.{3,0,1,2} |
答案
B |
举一反三
若集合A={x 题型:x|≤1,x∈R},集合B={x|x≤0,x∈R},则A∩B= |
[ ] |
A.{x|﹣1≤x≤0,x∈R} B.{x|x≤0,x∈R} C.{x|0≤x≤1,x∈R} D.{x|x≤1,x∈R} |
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