电气设备可能被人触及的裸露带电部分应设（）。
A、保护罩或遮栏及警示标志
B、警示标志
C、开关
参考答案：A
单词填空。
1.John is an e_____________ man, so he never feels tired.
2. Soon we’ll have a long summer v_______________.
3. There was an a_____________ house by the side of the road.
4. The mountain s_____________ was so beautiful that the tourists stopped to take pictures.
5. There are many s____________ sold in the places of interest.
智跑上市的时间是（）
A.2010/10/20
B.2010/10/10
C.2010/10/12
D.2010/10/25
