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【简答题】
Directions: This part is to test your ability to do practical writing. You are required to write a business letter for the official order of 15,000 - yard Bell - Wire; demanding the price, quality, weight as well as the color of the cotton insulation(棉绝缘线) are the same as the sample. You should write no less than 80 words in the Composition Sheet.
Directions:Directions: This part is to test your ability to do practical writing. You are required to write a business letter for the official order of 15,000 - yard Bell - Wire; demanding the price, quality, weight as well as the color of the cotton insulation(棉绝缘线) are the same as the sample. You should write no less than 80 words in the Composition Sheet.
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题目标签：绝缘线
参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【多选题】与架空裸线路相比，架空绝缘线路有下列优点：
A.
发生断线故障时对外界的危害程度小，
B.
减少由树枝与导线及建筑与线相碰而发生的瞬时短路故障也十分有效
C.
增加线路电感从而降低线路电压损失
D.
可缩小线间距离，节省空间
【多选题】在（）情况下要采用架空绝缘线路。
A.
架空线与建筑物的距离不能满足GB206--1987《架空配电线路设计技术规程》要求的地区
B.
高层建筑群地区
C.
人口密集，繁华街道区
D.
绿化地带、林带及乡镇街道
E.
污秽严重地区