单项选择题

25kV带电绝缘子接地侧裙边距接地体间隙，正常情况下最小值为（）

A.65mm
B．75mm
C．100mm
D．85mm

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单项选择题

在有轨道电路的区段作业时，不得使长大（长度大于或等于轨距）将线路两根钢轨短接（）

A.导体
B．金属物体
C．工具
D．物体

The ________________is an ethical code issued by Institute of Management Accountants (IMA) of the United States and a revised version was published in July 2017.

答案： The Statement of Ethical Professional PracticeThe Statement ...