【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
【简答题】用2、5、0、9、7、8六个数字,组成最大的六位数是______,最小的六位数是______.
【判断题】A case can protect your iPod from being bent, dropped or crushed.
【简答题】用三个0、二个1、一个9写出数最大的六位数是______,最小的六位数是______.
【简答题】最大的五位数是( ),最小的六位数是( ),它们的差是( ),它们的和是( )。
【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=( )