题目内容
已知U为全集,A,B,I都是U的子集,且A?I,B?I,则CI(A∩B)=( )
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试题答案
D
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已知U为全集,A,B,I都是U的子集,且A⊆I,B⊆I,则CI(A∩B)=( )
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| A.{x∈U|x∉A且x∉B} | B.{x∈U|x∉A或x∉B} |
| C.{x∈I|x∉A且x∉B} | D.{x∈I|x∉A或x∉B} |
已知U为全集,A,B,I都是U的子集,且A⊆I,B⊆I,则CI(A∩B)=
- A.{x∈U|x∉A且x∉B}
- B.{x∈U|x∉A或x∉B}
- C.{x∈I|x∉A且x∉B}
- D.{x∈I|x∉A或x∉B}