下列哪个图形是由下图平移得到的
A.
B.
C.
D.
答案：C
— ______ did you see a cat run from behind the door?
— As soon as I entered the room.[ ]
A. What
B. When
C. Where
D. Why
可编程控制系统与工业控制计算机，集散控制系统的主要区别在哪些？
