盾构法隧道施工中,管片水平拼装成环后外径允许偏差值为()mm。A:±2B:±5C:+8,-5D:+6,-2

作者: rantiku 人气: - 评论: 0
问题 盾构法隧道施工中,管片水平拼装成环后外径允许偏差值为()mm。
选项 A:±2 B:±5 C:+8,-5 D:+6,-2
答案 D
解析 盾构法隧道施工管片水平拼装,成环后内径允许偏差为±2mm,外径允许偏差为(+6,-2)mm。

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.'; ?>