上述研究适宜的调查方法为(  )A.整群抽样调查B.典型调查C.简单随机抽样调查D.普查E.系统抽样调查

作者: rantiku 人气: - 评论: 0
问题 上述研究适宜的调查方法为(  ) A.整群抽样调查 B.典型调查 C.简单随机抽样调查 D.普查 E.系统抽样调查
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答案 A
解析

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  • 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
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