在粉煤灰和锅炉渣中也常含有( )以上的未燃尽炭,可从中直接回收炭或用以 烧制砖瓦。A. 10% B. 15% C. 20% D. 30%

作者: rantiku 人气: - 评论: 0
问题 在粉煤灰和锅炉渣中也常含有( )以上的未燃尽炭,可从中直接回收炭或用以 烧制砖瓦。
选项 A. 10% B. 15% C. 20% D. 30%
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.'; ?>