【单选题】
变压器中性点接地属于___。
A. 工作接地；
B. 保护接地；
C. 防雷接地；
D. 安全接地；
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答案
A
解析
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绝缘子可分为___。
A. 电站绝缘子和电器绝缘子2种；
B. 电站绝缘子和线路绝缘子2种；
C. 线路绝缘子和电器绝缘子2种；
D. 电站绝缘子.电器绝缘子和线路绝缘子3种；
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