硬质梯子的横档应嵌在支柱上，梯阶的距离不应大于35cm，并在距梯顶0.5m处设限高标志。_电力安全工作规程变电部分_全学科试题题库

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硬质梯子的横档应嵌在支柱上，梯阶的距离不应大于35cm，并在距梯顶0.5m处设限高标志。
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