In a reaction where energy is released, the total energy of the products is ___ the total energy of the reactants. A. greater than B. less than C. equal to D. depends on 相关知识点: 试题来源: 解析 B。在释放能量的反应中,产物的总能量小于反应物的总能量。选项 A“greater than”表示...
In a chemical reaction, if energy is released, the reaction is said to be ___. A. endothermic B. exothermic C. neutral D. reversible 相关知识点: 试题来源: 解析 B。本题考查化学反应中能量变化的概念。如果化学反应中释放能量,这种反应被称为放热反应(exothermic)。选项 A“endothermic”是吸热反应...
Before the chemical reaction was controlled, a lot of energy ___ released. A. had been B. was C. is D. has been 相关知识点: 试题来源: 解析 A。在化学反应得到控制之前,大量的能量已经被释放了,“过去的过去”且是被动,用过去完成时的被动语态,A 选项正确。反馈 ...
The energy___by the chain reaction is transformed into heat. A. released B. relieved C. revealed D. resumed 相关知识点: 试题来源: 解析 A 正确答案:A 解析:动词辨析题。release意为“释放”;relieve意为“减轻,使放心”;reveal意为“揭露”;resume意为“重新开始,再继续”。根据题意,选A。反馈 ...
The energy ___ by the chain reaction is transformed into heat. A. transferred B. released C. delivered D. conveyed 答案 Btransferred意为“转移”;released意为“释放”;delivered意为“投递”;conveyed意为“传达”。release the energy意为“释放能量”和transformed into heat意为“转化为热能”形成词...
翻译:连锁反应释放出来的能被转换成热。解析:本题中,The energy 是句子的主语,后___by the chain reaction应是被动语态的短语,做它的定语。后面 is transformed into heat。也是被动语态,被转化成热。 四个供选择的单词意思分别为:释放、转换、传递和转换、改变。 显然A.released 最为恰当。结果...
The transport processes of diffusion and convection take the mobile reactant, oxygen, from the boundary to the distributed reaction where heat energy is released, and then convey the latter back to the boundary. The equations of the model are evaluated numerically and results are in general ...
Radium-226 undergoes natural radioactive decay to distintegrate spontaneously with the emission of an alpha partical(α-particle) to form radon(Rn).theα-psrticle decay constant this reaction is 4.30×10^(-4)yr(-1).the masses of the particles involved in the reaction are radium:226.0254u,...
解析 答案:is transformed.根据句意可知,此处应用被动语态,且主语为The energy,句子陈述事实,使用一般现在时,因此be动词使用is.故答案为:is transformed.结果一 题目 The energy released by the nuclear reaction___(transform) into heat. 答案 is transformed.根据句意可知,此处应用被动语态,且主语为The energy...
The energy released by the chain reaction is transformed into heat. . A.dischargedB.putC.deliveredD.conveyed相关知识点: 试题来源: 解析 A :。release意为“释放”;entrust意为“委托,托管”;deliver意为“递送,陈述,释放,发”;convey意为“搬运,传达,转让”。