【单选题】
验电后应挂设接触网[轨]接地线，因事延误或超过___min以上未能挂设接触网[轨]接地线时，在挂设接触网[轨]接地线之前应重新验电
A. 10
B. 8
C. 6
D. 5
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答案
D
解析
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拆除接触网[轨]接地线时，应先拆除接触线[或汇流排、接地环、接触轨]上紧固的（ ），再拆除回流钢轨上紧固的___。
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【多选题】
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