首页
登录
职称英语
According to the article, people named this stuff "flammable ice" because______
According to the article, people named this stuff "flammable ice" because______
游客
2023-12-28
43
管理
问题
According to the article, people named this stuff "flammable ice" because______ [br]
Buried below the seabed around Japan, there are beds of methane, trapped in molecular cages of ice. In some places, the sediment covering these deposits of frozen water and methane has been eroded away, leaving whitish mounts of what looks like dirty ice rearing up out of the seafloor.
Take a chunk of this stuff up to the surface and it looks and feels much like ice, except for a give-away fizzing sensation in the palm of your hand, but put a match to it and it doesn’t just melt, it ignites. Large international research programs and companies in Japan, among other countries, are racing to retrieve this strange, counter-intuitive substance — known as fiery ice — from beneath the seafloor to use its methane for fuel. If all goes to plan, they may even start extraction by the end of the next decade. But the journey so far has been far from smooth.
There’s no doubt that methane hydrates could offer a major source of fuel, with recent estimates suggesting they constitute about a third of the total carbon held in other fossil fuels such as oil, gas and coal. Several nations, notably Japan, want to extract it. It is not hard to find, often leaving a characteristic seismic signature that can be detected by research vessels. The problem is retrieving that gas and bringing it to the surface.
"One thing that’s clear is that we’re never going to go down and mine these icelike deposits, " says Carolyn Ruppel, who leads the US Geological Survey’s Gas Hydrates Project.
It all comes down to physics. Methane hydrates are simply too sensitive to pressure and temperature to simply dig up and haul to land. They form at typically several hundred metres beneath the seafloor at water depths of about 500 metres, where pressures are much higher than at the surface, and temperatures are close to 0°C. Take them out of these conditions, and they begin to break down before the methane can be harnessed. But there are other ways to do it.
选项
A、The problem of extracting methane hydrates is retrieving methane gas and bringing it to the surface.
B、It is very easy to find methane hydrates.
C、Only Japan wants to extract methane hydrates.
D、Methane hydrates are a major source of fuel in Japan.
答案
A
解析
细节判断题。根据原文“The problem is retrieving that gas and bringing it to the surface”可知,开采甲烷真正的挑战在于分离甲烷并将其输送到海面,A选项正确;B和C项均为过分曲解原文意思,原文说找到甲烷水合物并不难,但不意味着很容易找到,B选项错误;文中提到多个国家,尤其是日本希望开采甲烷水合物,而不是只有日本想要开采,C选项错误;由第三段开头“There’s no doubt that methane hydrates could offer a major source of fuel”可知,甲烷水合物可能会成为一种主要的燃料来源,并未提到甲烷水合物是日本的主要燃料来源,D选项错误。故选A。
转载请注明原文地址:https://tihaiku.com/zcyy/3314083.html
相关试题推荐
TheblackpeopledidnotvoteinAmericain1941.[br][originaltext]WhenH
TheblackpeopledidnotvoteinAmericain1941.[br][originaltext]WhenH
TheblackpeopledidnotvoteinAmericain1941.[br][originaltext]WhenH
TheblackpeopledidnotvoteinAmericain1941.[br][originaltext]WhenH
TheblackpeopledidnotvoteinAmericain1941.[originaltext]WhenHenryt
Accordingtothepassage,howmanyuniversitiesintheUnitedStatestookparti
Accordingtothepassage,howmanyuniversitiesintheUnitedStatestookparti
Accordingtothepassage,howmanyuniversitiesintheUnitedStatestookparti
Whichofthefollowingstatementsistrueaccordingtowhatyouhaveheard?[br]
Whichofthefollowingstatementsistrueaccordingtowhatyouhaveheard?[br]
随机试题
[originaltext]AliceAnnMunroborn10July1931isaCanadianauthorwritin
一般地,合伙型股权投资基金出现以下情形的,应当解散,说法错误的一项是()。A.
关于2020年全国公路货物运输情况的描述,可以推出的是:A.2月份货运平均运
药品经营中对药品经营企业索要的基本资质是A.税务登记证、营业执照B.营业执照、药
A.适用于照射物表面灭菌、无菌室空气及蒸馏水灭菌B.用于将待灭菌物置沸水中加热灭
3,5,6,10,11,17,18,()。A.25 B.26
构成营销活动效率的基础是( )。A.产品的流通渠道 B.产品的流通环节 C
某8度(0.20g)抗震设防的底层框架抗震墙砌体房屋,如图所示。房屋共有4层,一
某建筑边坡支护体系中的锚杆,主筋采用3根直径22mm的HRB400钢筋,钢筋的屈
(2021年真题)项目监理机构应在( )后编制工程质量评估报告。A.单位工程完
最新回复
(
0
)