紫外线灯管充有一种气体,这种气体在光谱中为蓝色,它较易于电离,使灯管点燃,且不会干扰紫外线,这种气体名叫A.氮气B.氧气C.氩气D.氦气E.氢气

作者: rantiku 人气: - 评论: 0
问题 紫外线灯管充有一种气体,这种气体在光谱中为蓝色,它较易于电离,使灯管点燃,且不会干扰紫外线,这种气体名叫
选项 A.氮气 B.氧气 C.氩气 D.氦气 E.氢气
答案 C
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.'; ?>