圆管层流运动过流断面上速度分布为(式中r0为圆管半径)( )。

作者: tihaiku 人气: - 评论: 0

问题圆管层流运动过流断面上速度分布为(式中r0为圆管半径)( )。

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答案 A

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错误啦！

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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