发电机转子上的中心环除使护环稳固外，还防止绕组端部径向位移。
参考答案：错
游标量具的读数机构是（）组成。
A．尺身
B．尺身和游标
C．游标
D．尺身刻线
Project（）Management is the Knowledge Area that employs the processes required to ensure timely and appropriate generation, collection, distribution, storage, retrieval, and ultimate disposition of project information.
A．Integration
B．Time
C．Planning
D．Communication
