问题 单项选择题

如果380V电力电缆(承载功率小于2kW),与综合布线电缆都在接地的线槽中,且平行长度小于10m,则两条电缆间最小敷设间距为______mm。

A.10
B.70
C.80
D.30

答案

参考答案:A

写作题

看图写句。

根据每题所提供的情景和提示词写一个与图画内容相符的句子。(要求用上提示词)

    

           1                        2                        3                           4                          5

1. (Jane, like)                                                                                                                  

2. (good, eat)                                                                                                                  

3. (we, tomorrow)                                                                                                           

4. (Jack, now)                                                                                                                 

5. (Lily, school, yesterday)                                                                                                

单项选择题