简述室外环境的空间与场所？
参考答案：
集散广场、活动场所、停车场所。
There are lots of mistakes in my homework because I didn’t pay attention to ____ the teacher. [ ]
A. listen
B. listening to
C. listening
D. listen to
少油灭弧器常采用哪几种灭弧方式？各有什么特点？
