每日即兴英文演讲 - Should winter tires be required by law for all the vehicles? 05:19 每日即兴英文演讲Describe a piece of good news you heard about someone you know very 03:07 每日英文即兴演讲 Describe a website you often visit 04:06 每日即兴英文演讲Describe a website you like to ...
到2050年，交通运输将发生巨大的变化。With experimentation focused on self-driving cars already underway from car manufacturers such as Tesla, it is not much of a stretch to believe that by 2050, the technology for fully automated vehicles will exist.特斯拉等汽车制造商已经在进行自动驾驶汽车的试验，...
Many people continue to use cars and motorcycles even though they know that they are bad for the environment. Why is this the case? What can be done to reduce the use of these vehicles? Give reasons for your answer and include any relevant examples from your own knowledge or experience. ...
(Threat) How many competitors exist, and what is their market share? (Threat) Are there new regulations that potentially could harm our operations or products? Strengths 1. What is our competitive advantage? 2. What resources do we have?
Many solutions to perching unmanned aerial vehicles exist, and have been extensively reviewed12. One example, a fixed-wing prototype capable of perching to walls was proposed in13. Attachment to a surface is an important issue, addressed differently with systems such as micro-spines14,15, spines...
Nestled in a valley at the foot of the Andes, the Chilean capital of Santiago has been using electric vehicles from China as part of plans to revamp its public transport system and advance clean mobility. During the construction of the China-Laos Railway, which connects Kunming in China's Yu...
Autonomous vehicles (AVs) are being developed, tested, and commercialized around the world. While skilled human drivers can rely on their experience and common sense to navigate complex driving situations that involve trade-offs between competing objecti
To meet the demand for ammunition, ships and vehicles for battle, various fences and railings in the city of London were removed for repurposing. The real fate of these pieces, however, is unclear: some say they ended up being dumped into the Thames river or became ballasts for ships, as...
Several potential carbon-neutral alternatives to diesel combustion engines exist, including hydrogen engines and biofuels or synthetic fuels (synfuels); however, battery electric vehicles (BEVs) are considered suitable propulsion systems for most commercial vehicle use cases...
inventors tinkered with a number of ways in which automobiles could be powered — including electricity, fossil fuels, steam and combinations of these things. The history of hybrid electric vehicles, however, began shortly after the dawn of the 20th century. Here are some of the highlights of ...