单项选择题

One of the most promising methods of storing hydrogen fuel is ______.

A．in gas form
B．putting it in liquid
C．preserving it in tanks
D．in the form of metal hydrides
<上一题 目录 下一题>
热门 试题

单项选择题
Which sentence proves that setting the giant reflector is a delicate operation
A．The first sentence in the last paragraph.
B．The second sentence in the last paragraph.
C．The last sentence in the last paragraph.
D．The last sentence in the third paragraph.
单项选择题
What does the passage mainly discuss
A．The production of solar light and heat.
B．The physical and chemical nature of life.
C．The conversion of Hydrogen to helium.
D．Radiation in the X - ray part of the spectrum.
相关试题