【单选题】已知全集U={1,2,3,4,5,6,7,8},A={1,4,6},B={4,5,7},则(C U A)∩(C U B)等于( )
【简答题】用3个5和3个0组成一个六位数:只读一个零的六位数是______,读出两个零的六位数是______,组成最小的六位数是______.
【简答题】The creditors can protect their identity in the following ways except
【判断题】旅游业是一个非劳动密集型的行业,也是一个跨地区、跨行业的综合性产业。
【判断题】{1,2,3,4,5,6}∩{2,4,6,8,10}={2,4}
【判断题】A case can protect your iPod from being bent, dropped or crushed.
【判断题】旅游业是一个劳动密集型产业,也是一个跨地区跨行业的综合性产业。( )
【单选题】已知全集U={1,2,3,4,5,6,7,8},A=3{,4,5,6},B={1,2,3,4}.则C U A∩B=( )
【单选题】In CA6140 ,( ) can automatically disconnect the motion to protect the machine tool in case of overload or accident .
【单选题】设全集U={1,2,3,4,5,6,7,8},集合A={1,2,3,5},B={2,4,6},则(C u A)∩B=( )