燃气管道随桥梁敷设，过河架空的燃气管道向下弯曲时，弯曲部分与水平管夹角宜采用( )。A.30 B.45 C.60 D.75

作者: rantiku 人气: - 评论: 0

问题燃气管道随桥梁敷设，过河架空的燃气管道向下弯曲时，弯曲部分与水平管夹角宜采用( )。

选项 A.30 B.45 C.60 D.75

答案 B

解析过河架空的燃气管道向下弯曲时，向下弯曲部分与水平管夹角宜采用45形式。

分享到：

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！

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.'; ?>