问题

选项

答案 A

解析根据电池反应式知，放电时，Fe元素化合价由0价变为+2价，所以Fe做负极，Ni203得电子为正极。电池放电时，负极上铁失电子和氢氧根离子反应生成氢氧化亚铁，电极反应为

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.'; ?>

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