フリー問題

問題文

A showroom wants a wireless replacement for the cable that feeds a large display three meters away. Which pair states where the millimeter link works and what a passing person does to it?

選択肢

1. The very high band trades distance for raw bandwidth, so the millimeter link works within one showroom and the passing person blocks the whole cell in that proposal.
2. The very high band trades distance for raw bandwidth, so the millimeter link works within one showroom and the passing person blocks the whole signal in that proposal.
3. The very high band trades distance for raw bandwidth, so the millimeter link works within one site and the passing person blocks the whole signal in that proposal.
4. The very high band trades distance for raw bandwidth, so the millimeter link works within one site and the passing person blocks the whole cell in that proposal.