X线管的焦点不包括A.实际焦点B.有效焦点C.大焦点D.小焦点E.虚焦点

作者: rantiku 人气: - 评论: 0
问题 X线管的焦点不包括
选项 A.实际焦点 B.有效焦点 C.大焦点 D.小焦点 E.虚焦点
答案 E
解析 :X线管的焦点包括A、B、C、D,不包括E

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.'; ?>