the nuclear industry 后面的动词还要加 s的么

陈风强2022-10-04 11:39:541条回答

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kukafei1974 共回答了15个问题 | 采纳率93.3%
在一般现在时态中后面的动词是要加s或者es的,即动词第三人称单数
如 the nuclear industry is developing fast
如果是情态动词,那么就是动词原形
如 the nuclear industry must be forbidden .
1年前

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Should the world rethink the development of nuclear power?全世界是否应该重新考虑核能的发展?
Widespread concern over Japan´s escalating(升级) nuclear crisis have rekindled(重新点燃) a worldwide debate about nuclear safety.As Switzerland and Germany suspend their atomic plans,do you think it is time to reconsider the development of nuclear power?
Yes.The emission(散发) of radioactive materials would endanger the lives of people as well as the environment if accidents like Japan happen.We will all be safer with fewer plants.
No.Nuclear energy presents a safe,clean,and inexpensive alternative to other methods.We should learn from Japan about how to make nuclear power plants safer instead of banning them.
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英语翻译In the early days of nuclear power,the United States mak
英语翻译
In the early days of nuclear power,the United States make money on it.But today opponents (反对者) have so complicated its development that no nuclear plants have been ordered or built here in 12 years.
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翻译:在核能开发的早期,美国人靠它赚钱.但是反对者将其发展弄得举步维艰以致于12年内这里再也没有过核电站的建设与规划.核能反对者的最大的恐惧来源于一个叫“堆内熔化”的反应堆.今天,这种“堆内熔化”威胁到公众安全的几率已经极其微小了.但为了进一步降低其可能性,工程师正在测试一种可以通过自然法则而不需要借助于人类的判断来关闭的反应堆.现在General Electric (通用电气)已经在日本建立两个这种先进的反应堆.但是别指望会在美国的海滨出现除非华盛顿的政局发生改变.
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答案由【英语精英团】与【英语牛人圑】提供
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英语翻译
it is not the peaceful application of nuclear energy that is endangering the suivival of humankind.
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Cancer-killing X-rays,nuclear threat detection and a new typ
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核能源是什么?
Nuclear Power, electrical power produced from energy released by controlled fission or fusion of atomic nuclei in a nuclear reaction. Mass is converted into energy, and the amount of released energy greatly exceeds that from chemical processes such as combustion.
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英语翻译
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在三里岛(TMI)二单元发生事故的余波之中,核工业和美国核管理委员会(NRC)明确地认识到管理和组织因素的重要性.随后的切尔诺贝利事故,国际核安全顾问组织(INSAG)向资助对于安全性很重要的管理和组织因素介绍了“安全文化”这一术语.【1】尽管INSAG打算用“安全文化”来获取对于安全工厂操作意义重大的管理和组织因素,但是很多调查者更加仔细地使用这一术语.“安全文化”是经常被用于资助组织文化的一个元素,同时,也是“管理和组织因素”这一广义术语的一个组成部分.虽然主要事故通常是由于一个个体的不安全行为(或者失败的行为)所引发,但是同样他们也会被能够增强后果的组织创造的条件所带动.在TMI事故的NRC的调查对委员会和公众报告说,有一种我们已经浏览过结论的主题是,主要的在商业上的不足之处是反应堆的安全性不再是设备问题,而是他们管理问题.【2】随后报告陈述了,NRC这个组织,很要命的忽略了操作训练、人类因素工程学、应用管理和技术资格这些至关重要的方面.在事故之后的几年,那个主张获取了大量NRC管理议程的基本方面,并且工业议程也改善了工厂组织.NRC的前TMI行动计划包括在人为因素的主要方向下的大量问题.主要类别包括操作资格和训练、工作人员的等级和工作条件,人机交互、紧急情况操作步骤、人的可依赖性和组织管理成效.NRC所采取的主动权独立性中,工业看到一种对于改善核条件质量的需求.核能操作协会由运作核能工厂强化工厂运营优点的电力应用所建立起来的.在设施管理的信心和人为在国际核能委员会的表现被1986年得切尔诺贝利事故所严重损害.在切尔诺贝利前事故评论会议的报告中,INSAG陈述道,得到的至关重要的结论是,在工厂的操作成熟工作人员中,对于工厂的安全性寄托完全的权威和责任的重要性.正式的步骤,严格的检查和认可,必须被应用于核安全文化的创造和维护.
(我是纯人工翻译的,我是考过GRE的,这种难度不是太难.英文中有很多错误,翻译得挺不容易)
It isn’t decided yet __________ a nuclear power station will
It isn’t decided yet __________ a nuclear power station will be built here.
A.that B.where C.what D.whether
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D

考查主语从句,it是形式主语,从句是完整的句子,应该在AC之间选择,又因为是还没决定的事,所以用whether,句意是:是否在这儿建核电站还没决定呢。选D。
阅读下列短文,掌握其大意,然后从26—50各题所给的四个选项中,选出一个最佳答案。The use of nuclear

阅读下列短文,掌握其大意,然后从26—50各题所给的四个选项中,选出一个最佳答案。
The use of nuclear power has already spread all over the world, However, scientists still have
not 36 on what should be done with the large 37 of waste material that tend to increase everyyear .
Most waste materials are dealr 38 simply by placing them 39 .But nuclear waste 40 be dealt with very carefully. It gives 41 dangerous radiation and it will continue to be 42 for hundreds, thousands, even mil-lions of years.
How should we get rid of such waste material in a 43 that it will not harm the environment? Where can we safely 44 it? One idea is to put this 45 waste inside a 46 container , 47 is then dropped to the deep bottom of the ocean. But some scientists believe that this way of dealing with nuclear waste could kill fish and other living things in the oceans 48 interfere(干扰)with their growth.. Another way 49 nuclear waste is to send it into space, to the sun, 50 it would be burned. Some scientists suggests suggest that this polluting material 51 buried thousands of meters under the 52 surface. Such under-ground areas must be lree 53 possible earthquakes. Advance id being 54 ,But it may still be many years 55 this problem could be finally settled.
小题1:
A.planned B.agreed C.regarded D.known
小题2:
A.nunber B.amounts C.lot D.mass
小题3:
A.of B.with C.up D.to
小题4:
A.anywhere B.nowhere C.elsewhere D.somewhere
小题5:
A.may B.should C.must D.can
小题6:
A.away B.off C.up D.down
小题7:
A.harm B.deathly C.dying D.deathly
小题8:
A.method B.way C.means D.manner
小题9:
A.place B.export C.do with D.do
小题10:
A.radioactive B.radiation C.active D.activity
小题11:
A.large B.stone C.thick D.nice
小题12:
A.that B.such C.and D.which
小题13:
A.or B.and C.so D.then
小题14:
A.to move B.to transport C.to remove D.to carry
小题15:
A.so B.when C.as D.here
小题16:
A.can be B.being C.be D.muse be
lps1945 1年前 已收到1个回答 举报

咖啡623 幼苗

共回答了17个问题采纳率:94.1% 举报

小题1:B
小题2:B
小题3:B
小题4:D
小题5:C
小题6:B
小题7:D
小题8:B
小题9:A
小题10:A
小题11:C
小题12:D
小题13:A
小题14:C
小题15:D
小题16:C
小题17:B
小题18:A
小题19:B
小题20:C


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1年前

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lps19451年前1
咖啡623 共回答了17个问题 | 采纳率94.1%
小题1:B
小题2:B
小题3:B
小题4:D
小题5:C
小题6:B
小题7:D
小题8:B
小题9:A
小题10:A
小题11:C
小题12:D
小题13:A
小题14:C
小题15:D
小题16:C
小题17:B
小题18:A
小题19:B
小题20:C


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英语翻译Japan’s 54 nuclear reactors are built to withstand the m
英语翻译
Japan’s 54 nuclear reactors are built to withstand the many small or moderate earthquakes the country faces each year.But Friday’s earthquake was one of the most severe earthquakes ever recorded.
奇异果奇异果1年前2
开心笑笑123 共回答了19个问题 | 采纳率94.7%
已经建成的日本的54座核反应堆可以抵御该国每年都会面临的小型或者中型的地震.但是周五的地震有史以来最严重的地震之一
The mere fact __most people believe nuclear war would be mad
The mere fact __most people believe nuclear war would be madness does not mean that it will no occu
a、what
b、 which
c、 that
d、 why
li3u5011年前3
grane 共回答了15个问题 | 采纳率100%
c 同位语从句
尽管(有)大多数人认为核战争是一件疯狂的事情(这么一个事实),但是并不能避免核战争的出现
排除A 因为不需要用问句
排除B 因为此横线上的关系代词 which 无法再从句中充当某个成分,主语 或者宾语
排除D 因为没有why语义不符合全局 翻译不通
帮我解答两个英文句子,急.In many senses nuclear energy is clean.It does
帮我解答两个英文句子,急.
In many senses nuclear energy is clean.It does not produce gaseous emmisions such as greenhouse gases,which are harmful either to the population and to the envitonment.
我不知道是不是我的理解有错误,按我的理解,第二句说的是“核能不会像温室气体一样放射出来”,所以 我认为后半部分应该是讲好的方面,可是后面的翻译好像是讲危害的吧?
谁能帮我解答下
还蛮急的
遥望兰花1年前1
愤怒的火红头发 共回答了20个问题 | 采纳率90%
在很多方面上,核能是一种清洁能源.它不会排放出像温室气体那样对人类或环境有害的气体
about nuclear winter
about nuclear winter
需要用英文回答
核的危害和好处简要介绍
四百字左右
janewhq1年前1
mandy0510 共回答了19个问题 | 采纳率89.5%
Nuclear winter is a hypothetical global climate condition that is predicted to be a possible outcome of a large-scale nuclear war.It is thought that severely cold weather can be caused by detonating large numbers of nuclear weapons,especially over flammable targets such as cities,where large amounts of smoke and soot would be injected into the Earth's stratosphere.
This layer of particles would significantly reduce the amount of sunlight that reached the surface,and could potentially remain in the stratosphere for weeks or even years (smoke and soot arising from the burning petroleum fuels and plastics would absorb sunlight much more effectively than would smoke from burning wood).The ash would be carried by the midlatitude west-to-east winds,forming a uniform belt of particles encircling the northern hemisphere from 30° to 60° latitude.These thick black clouds could block out much of the sun's light for a period as long as several weeks,causing surface temperatures to drop by as much as 30°C during the occlusion.
The combination of darkness and killing frosts,combined with high doses of radiation from nuclear fallout,would severely damage plant life in the region.The extreme cold,high radiation levels,and the widespread destruction of industrial,medical,and transportation infrastructures along with food supplies and crops would trigger a massive death toll from starvation,exposure,and disease.It was also thought that nitrogen oxides generated by the blasts would degrade the ozone layer,as had been observed in the first thermonuclear blasts.Secondary effects from ozone depletion (and concomitant increases in ultraviolet radiation) would be significant,with impacts on the viability of most human staple agricultural crops as well as disruption of ocean food chains by killing off phytoplankton.
英语翻译The field of nuclear medicine is a classic example of a
英语翻译
The field of nuclear medicine is a classic example of a medical discipline that has
embraced and utilized the concepts developed in the physical sciences.Conceived as a
‘‘joint venture’’ between the clinician and the physical scientist,it has evolved into an
interdisciplinary field of activity with its own body of knowledge and techniques.In the
process,the domain of nuclear medicine has grown to include studies pertaining to:
1.The creation and proper utilization of radioactive tracers (or radiopharmaceu-
ticals) that can be safely administered into the body
2.The design and application of nuclear instrumentation devices and systems to
detect and display the activity of these radioactive elements
3.The determination of the relationship between the activity of the radioactive
tracer and specific physiological processes
To better understand this radiation imaging modality,it is necessary to discuss
radioactivity,its detection,and the instruments available to monitor the activity of
radioactive materials.
zzz19801年前1
sugar3589 共回答了15个问题 | 采纳率93.3%
核医学领域是一个典型的例子,医疗纪律,
接受和利用在物理科学发展的概念.设想为一个
“临床医生和物理科学家之间的合资企业”,它已经演变成一个
跨学科领域的活动,其知识和技术,自己的身体.在
过程中,核医学领域已发展到包括有关的研究:
1.放射性示踪剂(或创建和正确利用radiopharmaceu
ticals),可以安全地进入人体管理
2.核仪器仪表设备和系统的设计与应用
检测并显示这些放射性元素的活动
3.放射性活性之间的关系的决心
示踪和特殊的生理过程
为了更好地理解这种辐射成像方式,它是必要的讨论
放射性物质,其检测和监察活动的工具
放射性物质.
为什么核武器的英文单词是nuclear?咋还有个clear?
种子的精神1年前2
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nuclear ['nju:kliə] adj.原子能的;[细胞] 细胞核的;中心的;原子核的.字面意思就是“of or like the nucleus of a cell”,因为形容词后缀ar的含义就是与...相关的、具有...性质的.而拉丁词根nuc,nucle表示的就是果实的“核”和细胞的“核”.
——of the two autours thinks that the danger of a nuclear war
——of the two autours thinks that the danger of a nuclear war is increasing.
a.none b.either c.both d.neither,怎么选,顺便说一下这几个词的用法和区别,
callcall1年前1
zhongye4 共回答了26个问题 | 采纳率84.6%
D
谓语动词thinks ,表明主语为单三.
none三者以上的否定
either 两者中的任何一个【夲句语境不符合】
both两者都【肯定句】复数
neither 两者都不【neither of.】作主语时,谓语用单三
The leaders from some of the countries suggested the nuclear
The leaders from some of the countries suggested the nuclear weapon about Iran worth paying attention _______ at the international conference.
A.to be discussed B.to being discussed C.to discuss D.to discussing
一少门徒1年前1
醉红樱桃 共回答了17个问题 | 采纳率76.5%
A

考查虚拟语气。句中Iran worth paying attention to为定语成分,本题考查suggest从句用should + v原形,should可省略,根据含义为被讨论,故选A。
1.Nuclear science should be developed to benefit the people
1.Nuclear science should be developed to benefit the people ____harm them.
A)more than B)other than C)better than D)rather than
2.In the course of a day students do far more than just ____classes.
A)attend B)attended C)attending D)to atteng
wengshenme1年前5
lauwer 共回答了10个问题 | 采纳率100%
1.D rather than 解释为"而不是"
核技术应该用于造福人类而不是危害人类.
2.A 比较级前后用并列的时态,前面用原形do,后面就用attend
内容:Two nuclear power stations _______ in the past ten years.
内容:
Two nuclear power stations _______ in the past ten years.
选项:
a、are built
b、have been built
c、would be built
d、are building
选择哪个?为什么?
涂鸦男1年前3
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从in the past ten years可知 是在过去的五年里 应该是现在完成时
谁可以告诉我中文意思Many people do regard the “dangers” of nuclear pow
谁可以告诉我中文意思
Many people do regard the “dangers” of nuclear power as being quite unique and,rightly or wrongly,as being at least qualitatively different from perceptions of all other dangers that are normally associated with human existence on earth in the 1980s.
hrrroo1年前3
yr6xc 共回答了21个问题 | 采纳率85.7%
Many people do regard the “dangers” of nuclear power as being quite unique and,rightly or wrongly,as being at least qualitatively different from perceptions of all other dangers that are normally associated with human existence on earth in the 1980s.
很多人确实认为核能的‘危险”不同凡响,而且不管是对还是错,他们的看法是核能的危险起码从质量上说和以往其他所有危险的概念有所不同,那些危险通常与1980年代的人类在地球的生存有关.
问:nuclear safetyuclear security 区别.请详解,谢!
问:nuclear safety&nuclear security 区别.请详解,谢!
gpxs1年前2
suppercats 共回答了20个问题 | 采纳率100%
-safety looks somewhat a little bit personal ,and specific with a target individual .
-security sounds more public focusing on the upper level which is usually used in hotels ,companies or international business or organizations
10K dead in Japan amid fears of nuclear meltdowns 求标题翻译,
他山泥巴1年前1
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日本笼罩在核泄露恐惧下,万人(十千)死亡
The highest-level talks on Iran's nuclear programme for at l
The highest-level talks on Iran's nuclear programme for at least six years have been held at the United Nations in New York.
for后面的翻译
milanpig1年前1
net_91717 共回答了20个问题 | 采纳率90%
在纽约联合国至少召开了六年.
Japan Floods Nuclear Reactor Crippled by Quake in Effort to
Japan Floods Nuclear Reactor Crippled by Quake in Effort to Avert Meltdown
milannoone1年前1
无尽的aa 共回答了16个问题 | 采纳率93.8%
Flood这里是谓语动词,是灌水的意思.全句译文:
日本朝被地震破坏了的核反应堆灌水,以免核反应堆熔毁.
英语翻译The Office of Coal,Nuclear,Electric and Alternate Fuels
英语翻译
The Office of Coal,Nuclear,Electric and Alternate Fuels (CNEAF) is responsible for routine data
improvements,and quality assurance activities of EIA survey data.
耶律不破1年前1
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煤炭,核能,电力和可转化能源办公室(CNEAF)负责例行的数据改进并且对EIA(Electronic Industries Association,电子工业联合会)的数据调查提供可靠保证.
请问有阅读It is often claimed that nuclear energy is something………
请问有阅读It is often claimed that nuclear energy is something…………这篇的答案吗
lcddjyy1年前1
zchvip750213 共回答了20个问题 | 采纳率90%
Questions 26 to 30 are based on the following passage.
It is often claimed that nuclear energy is something we cannot do without.We live in a consumer society where there is an enormous demand for commercial products of all kinds.Moreover,an increase in industrial production is considered to be one solution to the problem of mass unemployment.Such an increase presumes an abundant and cheap energy supply.Many people believe that nuclear energy provides an inexhaustible and economical source of power and that it is therefore essential for an industrially developing society.There are a number of other advantages in the use of nuclear energy.Firstly,nuclear power,except for accidents,is clean.A further advantage is that a nuclear power station can be run and maintained by relatively few technical and administrative staff.The nuclear reactor represents an enormous step in our scientific evolution and,whatever the anti nuclear group says,it is wrong to expect a return to more primitive sources of fuel.However,opponents of nuclear energy point out that nuclear power stations bring a direct threat not only to the environment but also to civil liberties.
Furthermore,it is questionable whether ultimately nuclear power is a cheap source of energy.There have,for example,been very costly accidents in America,in Britain and,of course,in Russia.The possibility of increases in the cost of uranium (铀) in addition to the cost of greater safety provisions could price nuclear power out of the market.In the long run,environmentalists argue,nuclear energy wastes valuable resources and disturbs the ecology to an extent which could bring about the destruction of the human race.Thus,if we wish to survive,we cannot afford nuclear energy.In spite of the case against nuclear energy outlined above,nuclear energy programmes are expanding.Such an expansion assumes a continual growth in industrial production and consumer demands.However,it is doubtful whether this growth will or can continue.Having weighed up the arguments on both sides,it seems there are good economic and ecological reasons for sources of energy other than nuclear power.
26.The writer’s attitude toward nuclear energy is ________.
A) indifferent
B) favorable
C) tolerant
D) negative
27.According to the opponents of nuclear energy,which of the following is true of nuclear energy?
A) Primitive
B) Exhaustible
C) Cheap
D) Unsafe
28.Some people claim that nuclear energy is essential because ________.
A) it provides a perfect solution to mass unemployment
B) it represents an enormous step forward in our scientific evolution
C) it can meet the growing demand of an industrially developing society
D) nuclear power stations can be run and maintained by relatively few technical and administrative staff
29.Which of the following statements does the writer support?
A) The demand for commercial products will not necessarily keep increasing.
B) Nuclear energy is something we cannot do without.
C) Uranium is a good source of energy for economic and ecological reasons.
D) Greater safety provisions can bring about the expansion of nuclear energy programmes.
30.The function of the last sentence is to ________.
A) advance the final argument
B) reflect the writer’s attitude
C) reverse previously expressed thoughts
D) show the disadvantages of nuclear power
答案如下:
26.D
27.D
28.C
29.A
30.B
英语语法单选求助After the earthquake of March 11,nuclear leaks occur
英语语法单选求助
After the earthquake of March 11,nuclear leaks occurred in Japan ,from ____effect many people are still suffering.A.which B.whose C.what D.that 麻烦帮我全句翻译一下并且分析为什么选B,关于定语从句尤其是介词+关系词我弱爆了,
lemontea8303161年前3
胡云不归 共回答了19个问题 | 采纳率89.5%
suffer from,定语从句 介词from 提前,effect 与前面nuclear leaks 是所属关系,翻译成.的影响.所以从句代词用whose
求大师帮忙分析下do的用法It is often claimed that nuclear energy is some
求大师帮忙分析下do的用法
It is often claimed that nuclear energy is something we cannot do without.
(97年1月六级阅读真题)
请问此处do充当什么成分,怎么从语法上解释呢.还是句子本身有错误啊?
198411071年前3
疏影横笛 共回答了16个问题 | 采纳率100%
定语从句 do something
求一篇名为Nuclear Power Station的英语作文,第一段写核电站现在比较普遍,第二段写它的优缺点,第三段写
美丽伊莎1年前1
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98
what can nuclear energy do in medical nad idustrial
sslhj1年前1
楂楂 共回答了20个问题 | 采纳率80%
医疗方面
应用于 核磁共振.
:)
Whitch countries are using Nuclear Power
天下兄弟1年前2
唐朝鬼 共回答了16个问题 | 采纳率93.8%
U.S,U.K,France,China,Russia,Pakistan and Iran (upcoming soon).
Nuclear power’s danger to health, safety, and even life itse
Nuclear power’s danger to health, safety, and even life itself can be summed up in one word: radiation.
Nuclear radiation has a certain mystery about it, partly because it cannot be detected by human senses. It can’t be seen or heard, or touched or tasted, even though it may be all around us. There are other things like that. For example, radio waves are all around us but we can’t detect them, sense them, without a radio receiver. Similarly, we can’t sense radioactivity without a radiation detector. But unlike common radio waves, nuclear radiation is not harmless to human beings and other living things.
At very high levels, radiation can kill an animal or human being immediately by killing masses of cells in vital organs. But even the lowest levels can do serious damage. There is no levels of radiation that is completely safe. If the radiation does not hit anything important, the damage may not be serious. This is the case when only a few cells are hit, and if they are killed immediately. Your body will replace the dead cells with healthy ones. But if the few cells are only damaged, and if they reproduce themselves, you may be in trouble. They can grow into cancer. Sometimes this does not show up for many years.
This is another reason for some of the mystery about nuclear radiation. Serious damage can be done without the victim being aware at the time that damage has occurred. A person can be irradiated(辐射)and feel fine, then die for cancer five, ten, or twenty years later as a result. Or a child can be born weak as a result of radiation absorbed by its grandparents.
Radiation can hurt us. We must know the truth.
小题1:Which of the following statements is true?
A.Nuclear radiation is just like common radio waves.
B.Nuclear radiation can cause cancer to human beings.
C.Nuclear radiation can be detected by human senses.
D.Nuclear radiation can be safe to human beings if its level is low.
小题2:How can nuclear radiation kill an animal?
A.By damaging its heart. B.By killing a few cells.
C.By hitting any place in its body. D.By killing many cells in important organs.
小题3: If a human being is hit by nuclear radiation, he may _______.
A.die of cancer after many years B.die immediately
C.have a child who may be born weak D.all of the above
shan_lch1年前1
misaria 共回答了14个问题 | 采纳率100%
小题1:B
小题2:D
小题3:D   

nuclear science should be developed to benefit the people( )
nuclear science should be developed to benefit the people( ) harm them
A.more than B.rather than
选A有什么不对吗,为什么答案是B呢
蔚汀1年前1
shinchou 共回答了17个问题 | 采纳率82.4%
答案当然是b,整句话的意思是核科学应该得到发展区帮助人类而不是害了他们.b表示的就是这个而不是,a不行
there are problems with nuclear energy that they have yet___
there are problems with nuclear energy that they have yet________
A.to solve
B.to be solved
C.been solved
D.beisolvedng
猫头猫脑-1年前6
我是啊恒 共回答了22个问题 | 采纳率95.5%
B 表示尚未解决的
the robots have been sent to repair the damaged nuclear powe
the robots have been sent to repair the damaged nuclear power station in Japan
It was the first time that the robots __have been sent____________ to repair the damaged nuclear power station in Japan.横线处为什么用现在完成时?
横线处改为 had been sent
不好意思打错了
黛咪251年前2
冰糖葫芦五加皮 共回答了17个问题 | 采纳率82.4%
had been sent是对的.it was the ,time that 用过去完成时.
(3)Nuclear power will do harm to our health and safety if it
(3)Nuclear power will do harm to our health and safety if it is not used properly.要标准翻译!
causunlei1年前8
莫小七 共回答了20个问题 | 采纳率80%
核能量如果不能合理运用的话就会对我们的健康和安全产生危害.
We’ve heard about radiation from the damaged nuclear reactor
We’ve heard about radiation from the damaged nuclear reactors in Japan reaching American shores. Experts say so far there is no reason to worry, and point out that we meet radiation every day. Where and how? NPR’s Renee Montagne posed that question to Peter Caracappa, a radiation safety officer and professor of nuclear engineering.
MONTAGNE: How many things emit radiation?
Dr CARACAPPA: Well, radiation and radioactive material is a part of nature. So everything that’s living has some amount of radiation coming from it—a very small amout. Plus there’s radiation in the ground and the air.
So the extremes are uranium in the soil to bananas?
Yes.
By the way, why do bananas have radiation?
Bananas have a lot of potassium(钾). And a small amount of potassium naturally is called potassium 40, which is radioactive
What’s the difference between radiation that’s harmful and not harmful?
Well, the term radiation can apply to a lot of different things. But the harmful radiation is ionizing(离子)radiation. It has enough energy that it can make chemical changes in material. We could get ionizing radiation from an X-ray, for example. It’s the kind of radiation that causes cancer.
The broader definition of radiation includes a lot of things that we call non-ionizing radiation. That includes everything like radio waves and visible light and your microwave.
So what then is the largest contributor of ionizing radiation?
For the natural sources of ionizing radiation, actually the biggest chunk of that tends to come from radon(氡), which is a radioactive material that is present in the air. It can become a concern when it builds up in low-lying areas of homes like basements.
Would it be fair to say that most people do not need to worry about the danger of being exposed to radiation?
I would say that the everyday exposure to radioation that we meet contributes an extremely tiny risk to our life or to our health compared to all of the other risks that we meet in our day-to-day life.
小题1:We can infer from the first paragraph that radiation is______.
A.rare B.powerful C.dangerous D.common
小题2:The passage may be _______.
A.an interview B.an argument C.a talk show program D.a science report
小题3:Whether radiation is harmful or not depends on______.
A.whether it has a small amount of potassium
B.whether it changes chemical in materials.
C.whether it has energy to change materials
D.whether it is visible in life
小题4:The purpose of writing this passage is to _______.
A.advise on how to protect us from radiation
B.analyze what causes radiation in daily life
C.warn people of the danger of radiation
D.expect people not to fear everyday radiation
sym9991年前1
我不是网评员 共回答了12个问题 | 采纳率91.7%
小题1:D
小题2:A
小题3:B
小题4:D          

A common reaction in nuclear fission power plants is 235,92
A common reaction in nuclear fission power plants is 235,92 U + 1,0 n -》 141,56 Ba + 92,36 Kr + 1,0 n
235,92 U = 3.90 x 10,-25kg
141,56 Ba = 2.34 x 10 -25kg
92,36 Kr = 1.53 x 10 -25kg
calcuate the energy released from this reaction in joules and MeV
茉莉小小20071年前1
liyingjiao 共回答了16个问题 | 采纳率81.3%
问题简单翻一下,就是一个核裂变方程,然后要你求这个反应释放的能量,以焦耳为单位和以MeV为单位分别写一下
首先看方程啊,就是个普通的裂变方程而已,这里考察的内容是质能定理,就是那个E=MC^2
C为光速
这里嘛反应前后每个元素的一个原子的质量他都给了呀
然后E=((M141,56 Ba +M92,36 Kr+M1,0 n)-(M235,92 U+M1,0 n))c^2
=(2.34 x 10 -25kg +1.53 x 10 -25kg - 3.90 x 10,-25kg)C^2
数值自己算啦~这个是一个U原子反应放出的能量,单位是焦耳,你换算一下就到MeV的单位了
有疑问再交流~