接触网附加导线肩架与支柱密贴，紧固牢靠肩架呈水平状态，施工允许偏差应不大于（）mm。
参考答案：50
When I tried to find _________that prevented so many people from taking part in the program, it seemed to me that there were two main reasons.
A．why it did
B．that it did
C．what it was
D．why it was
变压器的损耗电量由哪几个部分组成？如何加收？
