首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
外语
When it comes to the environment, aviation has a rather dirty reputation. The industry produced 689 million tons of CO2 in 2012,
When it comes to the environment, aviation has a rather dirty reputation. The industry produced 689 million tons of CO2 in 2012,
admin
2020-12-14
98
问题
When it comes to the environment, aviation has a rather dirty reputation. The industry produced 689 million tons of CO
2
in 2012, according to Air Transport Action Group and this number is sure to grow as global demand for flight continues to skyrocket.
"Aviation will double in size worldwide in the next two decades, and if we’ re not able to provide a sustainable means to fly, we will create a ceiling for growth in the industry," says Ignaas Caryn, director of innovation at KLM Royal Dutch Airlines.
As a result, it looks like the aviation industry being ready to green up its game. In January, Boeing announced a new initiative to build a biofuel supply chain in the United Arab Emirates, as well as research it’s conducting into biofuels made from salt water-consuming desert plants.
To name just a few partnerships, the airplane manufacturer teamed with Virgin Australia Airlines is to produce sustainable aviation fuels from special trees in Australia. Airbus has also joined other aerospace companies in launching the ITASCA initiative, a collaborative project funded by the European Union to produce and test the use of sustainable jet fuel.
Frederic Eychenne, Airbus’ head of new energies, notes that no single crop will do the job for biofuels, and that to achieve true sustainability, biofuel—like food—is best when it’ s locally-sourced.
"Different countries grow different crops. They have different refineries in place. Sustainability isn’ t just about reducing emissions in the air. We have to consider the whole life-cycle in terms of production," he notes.
The main barrier to use biofuel on a larger scale, says Caryn, is the price. "Today, bio jet fuel is still three to four times more expensive than fossil fuel, because there’ s no continuous production. There’ s a demonstrated hole in the value chain," he notes.
To solve the problem, in 2010 KLM became a joint founder of SkyNRG—a major supplier of eco-efficient jet fuel.
"We believed the development of bio jet fuel was important, and that we couldn’t keep it within the boundaries of KLM, so we decided to come up with a new company. In the last five years, SkyNRG have supplied approximately 25 airlines," he says.
SkyNRG is also working with airlines and airports around the world to create bioports—or supply chains of sustainable jet fuel—in a bid to ultimately bring down the price.
"With an increase volume, we could see price parity within the next ten years," says Caryn.
According to the passage why bio jet fuel is more expensive than fossil fuel?
选项
A、It is hard to produce.
B、The demand continues to skyrocket.
C、There’s no continuous production.
D、The technology is not mature yet.
答案
C
解析
细节题。本题考查的是为什么生物燃料比化石燃料贵。可以定位到文中第七段的The main barrier to use biofuel on a larger scale,says Caryn,is the price.“Today,bio jet fuel is still three to four times more expensive than fossil fuel,becausethere’s no continuous production.从这里可以看出贵的主要原因是由于无法持续生产。因此,正确答案是C。
转载请注明原文地址:https://kaotiyun.com/show/MyP7777K
0
大学英语六级
相关试题推荐
CountriesRushforUpperHandinAntarctica[A]Onaglacier-filledislandwithfjords(峡湾)andelephantseals,RussiahasbuiltAn
TheAmericanWorkplaceIsBroken.Here’sHowWeCanStartFixingIt.[A]Americansareworkinglongerandharderhoursthanever
RichChildrenandPoorOnesAreRaisedVeryDifferently[A]ThelivesofchildrenfromrichandpoorAmericanfamilieslookmore
Manycurrentdiscussionsofimmigrationissuestalkaboutimmigrantsingeneral,asiftheywereabstractpeopleinanabstract
A、AmericansvowtochangeitB、Itisnotasbadasitusedtobe.C、Americansknowhowbaditistotheirhealth.D、Americansdo
A、Collectashtreeseedsforexperiment.B、Preservethehealthyashtreeseeds.C、Setupanewseedbankforresearch.D、Develop
Whatifwecouldreadthemindofaterrorist?ResearchersatNorthwesternUniversityinChicagosaytheyhavetakenastepclos
A、Burythemlocally.B、Throwthemaway.C、Asklocalexpertstorecyclethem.D、Deliverthemtootherrecyclingcompanies.D
Peopleatthelowerendoftheincomescaletakemorepleasureintheirrelationshipsandenjoycaringforandconnectingwitho
Theestimatesofthenumbersofhome-schooledchildrenvarywidely.TheU.S.DepartmentofEducationestimatesthereare250,00
随机试题
在手关节横断层面上,近侧列腕骨自桡侧向尺侧为_______________、_______________、_______________和_______________,远侧列腕骨自桡侧向尺侧为_______________、______________
病毒的形态学检查方法不包括
A、药物经济学B、成本C、直接成本D、间接成本E、隐性成本因疾病引起的疼痛,精神上的痛苦、紧张和不安,生活与行动的某些不便()
《安全生产法》规定了生产经营单位主要负责人对本单位安全生产工作所负的职责,其中最重要的一条是()。
【背景资料】某机电安装工程公司总承包一大型制药厂设备安装工程。合同约定,工程设备和主材由业主采购提供。管道工程安装时,因业主提供的水泵迟迟不能到货而影响工期,项目部为保证施工进度自行采购部分水泵并进行安装,安装后被监理工程师发现,下令停工。经与业
W公司是一家多元化经营的公司,公司领导层正在思考是否应该采取措施将新的业务加入到业务组合中去,在有吸引力的行业中建立新的地位。该公司领导的想法体现的是公司战略层次的()。
教育这个社会子系统的三个基本要素是:教育者、学习者和()
人力弹性理论:是指在人力资源管理中,通过灵活调整人力结构、员工数量、工作数量、工作内容、工作时间、员工薪资等因素,来满足企业对不同层次、不同水平和不同模式的人力资源需求的管理方式。其最大特点在于主要不是依靠外力(如上级发号施令),而是依靠个性平等、民主管理
从所给的四个选项中,选择最合适的一个填入问号处,使之呈现一定的规律性。
TheVictorianAgewaslargelyanageof______,eminentlyrepresentedbyDickensandThackeray.
最新回复
(
0
)