【简答题】给出下列关系: (1)0?{1,0} (2)φ∈{1,0} (3)φ?{0} (4){0}?{0} 其中正确的是______.
【单选题】数控编程改变进给速度倍率不能实现的功能是()。
【多选题】A scratch outline of a traditional colledge essay should contain ( ) and ( )
C.
three supporting points
【单选题】_______ be a plaything of the fate in face of failure, you should start from scratch.
【判断题】编写手动模式进给倍率梯形图程序时,可先编写格雷码转二进制的程序。
【判断题】编写主轴进给倍率梯形图程序时,可先编写格雷码转二进制的程序。
【单选题】To “scratch through the surface of the story,” the reader should .
A.
consider the characters, the story plot, and the humor
B.
take into consideration all the obvious elements of fiction
C.
find the theme of a book and think about how it applied to himself or herself
【单选题】给出下列关系:① 1 2 ∈R ; ② 2 ∈Q ;③3∈N * ;④0∈Z.其中正确的个数是( )