请看题目中的这两句话：
1。No two devices will have exactly the same name
2.Unfortunately, the room was built many years ago when reporters used very few electric and electronic devices and is equipped with only one receptacle of each type
1说明devices没有重名
2说明receptacle也不会重复

楼下的，请不要瞎讨论，这样很容易误导其他人的，知道吗？
希望大家WA的时候仔细再看看题，不要心浮气躁。