6ES7331-7PF11-0AB0 现货

6es7331-7pf11-0ab0 现货

厦门亿佳天辰贸易有限公司是一家长年从事销售西门子摩尔（mooreapacs）控制系统模块、我们售出的备品备件均提供一年的、并且都经过了严格的测试和认证。

   小故事三、袋鼠与笼子

   动物园管理员发现袋鼠从笼子里跑出来了，于是开会讨论，一致认为是

笼子的高度过低。所以他们决定将笼子的高度由原来的10米加高到20米。结果

二天他们发现袋鼠还是跑到外面来，所以他们又决定再将高度加高到30米。

   没想到隔天居然又看到袋鼠全跑到外面，于是管理员们大为紧张，决定一不

做二不休，将笼子的高度加高到100米。

   长颈鹿和几只袋鼠们在闲聊，“你们看，这些人会不会再继续

加高你们的笼子？长颈鹿问。“很难说。袋鼠说∶“如果他们再继续忘记关门的话

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