防直击雷的人工接地体距建筑物出入口或人行道不应小于( ),否则应采取均 压或绝缘措施。A. 1. 5m; B2. Om; C. 2. 5m; D. ...

作者: tihaiku 人气: - 评论: 0
问题 防直击雷的人工接地体距建筑物出入口或人行道不应小于( ),否则应采取均 压或绝缘措施。
选项 A. 1. 5m; B2. Om; C. 2. 5m; D. 3. 0m。
答案 D
解析

相关内容:防直,击雷,人工,接地,体距,建筑物,出入口,人行道,绝缘,措施

猜你喜欢

发表评论
更多 网友评论0 条评论)
暂无评论
错误啦!

错误信息

  • 消息: [程序异常] : MISCONF Redis is configured to save RDB snapshots, but it's currently unable to persist to disk. Commands that may modify the data set are disabled, because this instance is configured to report errors during writes if RDB snapshotting fails (stop-writes-on-bgsave-error option). Please check the Redis logs for details about the RDB error.
  • 文件: /twcms/kongphp/cache/cache_redis.class.php
  • 位置: 第 85 行
    <?php echo 'KongPHP, Road to Jane.'; ?>