为消除由于温度变化引起的危险应力,对滑动支持式铝管母线一般每隔()m左右安装一个伸缩接头。A.30~40;B.20~30;C.40~50;D....

作者: rantiku 人气: - 评论: 0
问题 为消除由于温度变化引起的危险应力,对滑动支持式铝管母线一般每隔()m左右安装一个伸缩接头。
选项 A.30~40; B.20~30; C.40~50; D.50~60。
答案 A
解析

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.'; ?>