【单选题】( ), a microcomputer with enhanced graphics and communications capabilities that make it especially useful for office work.
【简答题】The differences between single-board microcomputer and single-chip microcomputer do not stop there.
【单选题】如果x<y<0,那 |x| x + |xy| xy 化简么结果为( )
【单选题】如果x<y<0,那 化简么结果为 [ ]
【单选题】如果x与y互为相反数,那么下列各组数中不一定互为相反数的是( )
【单选题】如果x,y都不为零,且2x=3y,那么下列比例中正确的是( )
【单选题】In microcomputer systems, ______ often perform such operations as writing procedures, developing software, and capturing data.