炮孔深度0. 6~1. 0m时，炮孔填塞应符合下面规定（）。A.可以不封孔 B.封孔炮泥长度不小于孔深的1/2 C.封孔炮泥长度不小于孔深的1/3...

作者: rantiku 人气: - 评论: 0

问题炮孔深度0. 6~1. 0m时，炮孔填塞应符合下面规定（）。

选项 A.可以不封孔 B.封孔炮泥长度不小于孔深的1/2 C.封孔炮泥长度不小于孔深的1/3 D.封孔炮泥长度不小于孔深的1/4

答案 B

解析

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.'; ?>