フリー問題

問題文

The barn roof carries eleven solar panels, and the company wants one instrument on that same roof that would let it tell a panel losing output apart from a run of dull days. Inside the barn, the contract for the new fan has to be written against one figure that will still hold if the outlet grille is later changed for a wider one. Which pairing belongs in the works order?

選択肢

1. The works order records the pyranometer figure that this barn roof now needs, and the fan documentation rests on the airflow rating that the wider grille would leave alone.
2. The works order records the pyranometer figure that this barn roof now needs, and the fan documentation rests on the airspeed rating that the wider grille would leave alone.
3. The works order records the pyrometer figure that this barn roof now needs, and the fan documentation rests on the airflow rating that the wider grille would leave alone.
4. The works order records the pyrometer figure that this barn roof now needs, and the fan documentation rests on the airspeed rating that the wider grille would leave alone.