第21题: [单项选择]220kV送电线路在跨越电力线时,下列哪种说法是正确的()? A. 跨越电力线杆顶和跨越电力线档距中央的间隙要求一样 B. 跨越电力线杆顶的间隙要大于跨越电力线档距中央的间隙 C. 跨越电力线杆顶的间隙要小于跨越电力线档距中央的间隙 D. 跨越有地线电力线的间隙要小于跨越无地线电力线的间隙 参考答案:A 答案解析:依据《110kV~750kV架空输电线路设计规范》(GB50545-2010)表13.0.11备注:对500kV及750kV,跨越电力线杆顶的间隙大于跨越电力线档距中央的间隙。对于330kV及以下两者
第25题: [单项选择]Which floor does Linda live on A. She is doing her homework. B. She is writing a letter. C. She is washing her clothes. 参考答案:B 答案解析:[听力原文] M: Would you please help me with my English W: I’ll be glad to. But I must finish the