当电脉冲的频率及转子齿数一定时,步进电动机的转速( )。
A.与运行拍数的平方成正比
B.与运行拍数成正比
C.与运行拍数无关
D.与运行拍数成反比
参考答案:D
The boy was caught_______ in the examination and was punished by the teacher.
A.having cheated
B.cheated
C.cheating
D.cheat
简述知识管理激励机制的组成?