So, dynamical probes, such as the evolution of linear matter perturbations, can be used to distinguish between dark energy models and dynamic vacuum models. To exemplify the kinematic equivalence between dark energy models and vacuum decay models, we study two simple models: the wCDM, commonly ...
A. bright B. dark C. energy-saving D. wasteful 相关知识点: 试题来源: 解析 C。这道题考查形容词与智能家居特点的结合。“energy-saving”是“节能的”,智能灯节能才能达到节省能源的目的,“bright”表示“明亮的”,“dark”表示“黑暗的”,“wasteful”表示“浪费的”,均不符合节能这一特点。反馈...
题目: Food is very important. Everyone needs to A-51 well if he or she wants to have a strong body. Our minds also need a kind of food. This kind of food is A-52. We begin to get knowledge even A-53 we are very young. Small children are A-54 in everything around them. They...
After that, we organised a splendid performance for the elderly, such as singing, dancing and story-telling, which provided indoor recreation for them. So absorbed were we in being with them that we didn't realise it was time for departur...
5、A-5. We stayed for the night at the foot of the mountain and ___ to enter the mountain area the next morning. A、set about B、set ofF C、set up D、set out 正确答案:D 6、A-6. Don’t worry me now, I will repair that bike ___. A、by and by...
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Kpop4planet demanded that streaming platforms adopt 100% renewable energy, then pushed Hyundai to drop an aluminum smelting deal. This small group of volunteers is leveraging the power of K-pop fandom for climate action.
阅读短文,根据短文大意及上下文和首字母提示填词We can use many kinds of energy(能量).Most energy in the w___ today comes from b___ coal and oil.But this will not be so in the year 2020.We will get much of our energy f___ wate
根据第三段Coolingpaperis,infact,madeofpaper.Oneday,Zhengsaw a containerfullofusedprintingpaper.Hethoughttohimself, "Howcouldwesimplytransformthatwastematerialintosomefunctionalenergymaterial?"(事实上,冷却纸是由纸制成的。一天,郑看到一个装满用过的打印纸的容器。他心想:"我们怎么能简单地把这些废料转化为...
Dark matter accelerator? We don’t yet know what dark matter is made of, but the sun might help us find out. If dark matter particles are extremely light, they could bounce off atomic nuclei within the sun and gain enough energy in the process that we co