One long-distance flight consumes fuel which a car uses in several years' time, but they cause the same amount of pollution. So, some people think that we should discourage non-essential flights, such as tourist travel, rather than limit the use of cars. To what extent do you agree or ...
H2, that is, hydrogen fuel, is a molecule consisting of two hydrogen atoms. It is very flammable and can be used as a fuel that doesn’t produce any greenhouse gas emissions such as carbon. This makes it highly appealing as a renewable energy source in the global effort to mitigate clima...
Hydrogen fuel cells work by separating hydrogen into protons and electrons. The protons pass through a membrane, while the electrons create a separate current that can be utilized before they rejoin with the protons and oxygen to produce water. What are the main components of a hydrogen fuel cel...
The method of producing the fuel additive is a step of passing a supply stream containing C4 hydrocarbon through a methyl tertiary butyl ether unit to generate a first process stream, passing the first process stream through a selective hydrogenation unit. The step of generating a second process ...
These gases are then recombined in the fuel cell to produce electricity. (The advantage of doing things that way, rather than using the Sun's energy directly, is that you can store up hydrogen in the daytime when the Sun's shining and then use it to drive the fuel cell at night.)...
And when there are no patrons, there's plenty to keep you busy.当没有顾客时，还有很多事可以让你忙个不停。Every minute that passes, you could spend doing something.每过一分钟，你都可以做一些事情。Something important, or more important than this, at least.一些重要的事情，或者至少比这更重要...
Consumer Reports was a bit soberer, arguing its value, at least in several of the models it tested, lies in bringing up a consumption display that shows drivers their vehicle’s fuel usage in real-time. (Don’t) put the pedal to the metal ...
Some of that power can then be run back through the fuel cell to convert the stored water back to oxygen and hydrogen fuel through electrolysis. This system boasts very high efficiency, but is also massively complex and expensive to produce. ...
said.5Style grows out of the writer’s own personality and can be seen in the choice of words and phrases, the arrangement of sentences, the rhythm and tone. Structure refers to the architecture of the story, the way in which the details are selected and arranged to produce the desired ...
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