一个技术交流群的验证消息。有很多坑，问的是802.11g而不是现在常用的n，并且，不是固定答案，回答之后还是人工审核。很聪明的方法，应该在抵挡住大部分广告的同时，也筛选点很多并不是真正想进去群，或者个人能力还不够的一部分用户吧。
一个技术交流群的验证消息。有很多坑，问的是802.11g而不是现在常用的n，并且，不是固定答案，回答之后还是人工审核。很聪明的方法，应该在抵挡住大部分广告的同时，也筛选点很多并不是真正想进去群，或者个人能力还不够的一部分用户吧。
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