中小型异步电动机应设置哪些保护？
参考答案：
短路保护，失压保护，过载保护。
total of 8,000 people applied for the job, but total number of people who really got the job
was no more than 50.[ ]
A. A; the
B. The; a
C. A; a
D. The; the
洒水防尘工作业前，检查当班所需器材及（）是否齐全完好。
A、胶管
B、水管
C、工具
