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}
题型:单选题难度:一般来源:泉州模拟
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} |
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答案
∵P∩Q={0}, ∴log2a=0 ∴a=1 从而b=0,P∪Q={3,0,1}, 故选B. |
举一反三
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