哪个时期服用四环素类药物可致恒牙发生四环素牙A.胚胎4个月B.胚胎7个月C.出生以前D.出生至7岁以前E.8岁以后

作者: rantiku 人气: - 评论: 0
问题 哪个时期服用四环素类药物可致恒牙发生四环素牙
选项 A.胚胎4个月 B.胚胎7个月 C.出生以前 D.出生至7岁以前 E.8岁以后
答案 D
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.'; ?>