A company wants to connect two new offices to their main office.One building is 2 miles away from the headquarters and the other is 12 miles away. The angle between the buildings is 80 degrees. Which antenna is the best to use in this situation？ （） 
- A、 12 dBi omni
- B、 10 dBi yagi
- C、 14 dBi sector
- D、 21 dBi dish
正确答案:C
答案解析:有
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