单选题
编号：2578868
1.WhatisoneadvantageofEnwave′snewsystem?
- A.Itkeepsbuildingsmuchcoolerthanothermethods.
- B.Itcanbeusedbylargecitiesanywhereintheworld.
- C.Itismuchmoreenergy-efficientthantraditionalsystems.
- D.Itkeepswaterfrombeingusedformorethanonepurpose.