Like many other places in the world, the costs of electricity have gone up in Paris, France. In order to save money, the city's mayor (市长)Anne Hidalgo decided to turn off the lights on the Eiffel Tower earlier each night than before.Lights now go out at 11: 45 p.m., instead of...
requiredsomuchelectricitythatitmadelittlesensetoproducehydrogenthatway.Thesituationis changingfortworeasons.First,significantamountsofexcessrenewableelectricityhavebecome availableatgrid(输电网)scale;ratherthanstoringexcesselectricityinarraysofbatteries,the extraelectricitycanbeusedtodrivetheelectrolysisofwater,“storing”t...
D. can produce electricity through activities 43. If you use iris scans to tell a person, you . A. have to use passwords at first B. should show your fingerprints C. need to look straight at the machine D. ought to speak to the machine aloud 44. What does the underlined word “pas...
The generator produces electricity. As long as a student pedals the bicycle,electricity moves through the generator. The electricity can be used right away. This energy can also be stored and used later. People use bicycle - powered energy to run small devices(设备),such as small televisions ...
But their prices are coming down. What's more, gas costs a lot more than electricity. Once you use the gas, it's gone. Anyway, I think we're going to run out of gas at some point. This will make electric cars a need. Also, do you know that electric cars can travel 33 miles ...
One 61. method of solving the problem was a “hybrid” car (混合动力车), one that ran partly on petrol and partly on electricity. Hybrid cars became popular in the 2000s when petrol prices went up and the prices of hybrid cars went 62.down. An all-electric car uses no petrol. The ...
【题目】—All the lights have gone out in the office building. —Yes, they have ___ electricity. A. cut off B. cut up C. cut in D. cut down试题答案 在线课程 【答案】A 【解析】cut off “切断,中断”;cut up “切碎,切开”;cut in“插话”;cut down “削减,砍倒”。根据句意选...
Earth Day has come and gone,but it's a fact of daily life that 1.6billion people around would have no electricity in their homes.Instead,most of them use wood,coal or even animal waste to heat and cook in their homes,which also gives off greenhouse gases,causing indoor air pollution that...
In most provinces of China, some rules have been made to cut down 8 . Many power stations(发电站) that produce and provide 9 and clean electricity have been built. The power is from water, wind and sunlight. Most of the Chinese, 10 the young, are ready to protect the natural ...
A. A great demand for electricity. B. A complete hold of the global market. C. A strong export performance of e-bikes. D. A high political rank in the European Union.()31. What do we know from the last paragraph? A. The introduction of advanced battery packs is boosting the demand...