【单选题】设全集U={1,2,3,4,5},集合M={1, 3,5},N={3,4,5},则集合(? U M)∩N=
【简答题】设全集U={1,2,3,4,5,6,7,8),集合M={3,4,5),集.合N={1,3,6),则集合P={2,7,8)可表示成 ( ) A.M∪N D.M∩N
【单选题】设集合U={1,2,3,4,5},集合M={3,5},N={1,4,5},则M∩ =' ' ( )
【简答题】Once, long ago, there was a man who traveled from Persia to India on foot. He had been to India before. When he arrived at a village, he happened upon a fruit stand. In that village, fruit was quite b...
【单选题】—How long do you think it will be _______ we get the loan?—Perhaps two or three months.
【单选题】压力容器的制造方法多样,不同制造方式所成的容器有各自的特点,对于承压不高的中小型容器,可以采用技术较为成熟的( )方式制造:
【单选题】It’s not the whole nation rose up and drove the enemy out of their homeland.
【单选题】Not ____ he died, he received an award for his selfless service to the old. [ ]
【单选题】He said he had been to Hong Kong ____ and he would go there _____ once again. [ ]
A.
long before, before long
B.
before long, long before
D.
long before, long before
【判断题】磁盘的磁道和光盘的光道都是由外向内的同心圆。