问题 问答题 简答题

无人中继站保护底线采用什么样导线引接?引线与接地体采用什么方式连接?

答案

参考答案:

用不小于16平方毫米塑料护套多股铜线引接,由接地装置通过进线孔(管)引至站内。引线与接地体采用焊接方式连接.站内侧将引线焊在铜鼻子上,然后用螺丝紧固在机箱的接地连接孔(柱)上。

改错题
短文改错。下面短文中的划线部分都是错误的,请改正,并将正确答案写在右边相应的横线上,不得改变原文意思。
Dear grandma,
       How's it going? I hope that grandpa is good now. I was sorry to hear that he
had a cold last week. I hope you are on good health. Things are fine here. I
finished my end-of- year exams last week and get my report card today. I always
get nervous when I saw the envelope from school in the mail, 
       But unluckily I did OK this time. I had a really hard time with science this
semester, and 1 wasn't surprised find that my worst report was from my science
teacher. She said I was lazy, which isn't true. It's just I find that difficult to study
science well. Another disappointed result was in history.
       The good news are that my math teacher said I was hard - working. And
my Spanish teacher said my listening was good. Well, that's about the all news I
have for now. Mom and Dad send them love.
                                                                                                          Love,
                                                                                                          Alan
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