E中的either之后是一时间状语now,or之后是整个谓语部分,两者的并列同样不能让人接受。而D中,either…or连接两个与不同时间段相对应的不同谓语部分的并列,这种表达不仅在语法上,而且在逻辑上都是正确的:即now和are对应,will be与within a few years,不会存在共用同一谓语的情况。其中so替代与前面相同的表语成分:...
Viewed from scientists’ standpoint, alltheenergycontained in fuel either now or in the future becomes heat. 出自-2015年12月听力原文 That’senergyin all forms--oil, gas, coal, nuclear, solar and even wind power. 出自-2015年12月听力原文 ...
In the present times, we are constantly exploiting various energy sources. We permanently use energy sources in multiple forms of fossil fuels to fulfill our various requirements and applications. Due to this over-exploitation, humans are causing trouble for themselves as these fossil fuels may soon...
Offshore wind energy is converted into electricity using wind turbines installed in coastal waters on either fixed-bottom [6] or floating substructures anchored to the seabed [7]. About 80% of offshore wind resources are concentrated in waters deeper than 60 m [8] where the installation of co...
Additionally, the two classifications of energy (potential and kinetic) are often broken down into different types, leading some to incorrectly believe that there are other forms of energy. In fact, all forms of energy can be generalized as either potential or kinetic....
are unable to keep their home adequately warm is 11.5%, and the standard deviation is 12.1%, which justifies the potential asymmetries. Besides, the difference between the medians and the third quartiles (Q3) explicates the asymmetries which are either attributed to the disparities across members...
Therefore, one of the most widely used forms of 31-mode PEHs is a cantilever beam, since the resonance frequency of its fundamental flexural bending mode is much lower than those of other configurations [165]. The cantilever beam can be configured as either a unimorph (a piezoelectric layer ...
(EER). When it comes to whole-system performance, we would like to consider a range of operating conditions and use a metric that represents performance when the heat pump is installed and forms part of a heating and cooling system. Choice of a suitable metric has long been a concern ...
Most forms of renewable energy can also safely be called clean energy. Renewable energy sources There are five main types of renewable energy: Solar, wind, hydropower, geothermal, and biomass. Each type has pros and cons and unique applications, and they will all undoubtedly play an important ...
or forms of market price support such as tariff policies. An easy visual representation of the complexity of defining subsidies is a Russian nesting doll. In Fig.27.1, the inner layers are generally accepted as subsidies, whereas the outer two are more contentious, with especially the underpricing...