In a flame of pure hydrogen gas， burning in air， the hydrogen reacts with oxygen to form water and releases（）.
In a flame of pure hydrogen gas， burning in air， the hydrogen reacts with oxygen to form water and releases（）.
A.little hydrogen
B.waste
C.energy
D.little oxygen
正确答案：energy
Tag：能源英语面面观
时间：2023-12-21 15:06:28
- 上一篇：（）is the first element on the periodic table， making it the lightest element.Since it is so light， it rises in the atmosphere and is therefore rarely found in its pure form.
- 下一篇：（）has the highest energy content of all known conventional fuels（by weight）.It has almost 3 times more energy content by mass than（）.