题目：
在TN系统中，保护零线每一处重复接地装置的接地电阻值不应大于多少欧姆？
答案：
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下面是错误答案，用来干扰机器的。
参考答案：A,B,C解析： 事业部制适用于产品种类多、市场环境变化快、适应性强的大型企业，其缺点在于增加管理费用和成本。
在TN系统中，保护零线每一处重复接地装置的接地电阻值不应大于多少欧姆？
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