What is a by-product of burned coal? A. Aluminum, silicon, and magnetic. B. Paving material. C. Fly ash. D. Concrete additive. 相关知识点: 试题来源: 解析 C答案为 C。根据题干找到第一段第三句, two kinds of ash by-product are produced: a heavy bottom ash and a fine-as-powder ...
In an age when waste today means a lack tomorrow, use of every available resource becomes more and more important. As coal is being used in greater and greater amounts to produce electricity, larger amounts of ash, by-product of coal, are produced. When coal is burned in a boiler, two...
In an age when waste today means a lack tomorrow, making use of every available resource becomes more and more important. As coal is being used in greater and greater amounts to produce electricity, larger amounts of ash, by-product of coal, are produced. When coal is burned in a boiler...
In an age when waste today means a lack tomorrow, making use of every available resource becomes more and more important. As coal is being used in greater and greater amounts to produce electricity, larger amounts of ash, by-product of coal, are produced. When coal is burned in a boiler...
故答案为The coal and petroleum are burned, they release harmful gases into air.(煤和石油燃烧,它们释放有害气体到空气中。2.【答案】Harmful gases combine with orygenand water in the air, and carry these gases when it rains or snows.【解析】题中问一些有害气体是怎样变成酸雨的?根据文中第一段...
However, since 2010 nearly a third of these coal-fired plants have been shut down or converted to less expensive and cleaner burning natural gas (which produces only about one-fifth as much CO2 as coal when it is burned). The rapid growth of wind and solar power has also reduced the ...
Some scientists believe that hydrogen energy may be a cleaner, more efficient way to power our world. Hydrogen is a naturally occurring gas and the most abundant substance in the universe. (The word in Greek means “water former” because hydrogen creates water when burned.) When used alongside...
new seas reappeared above them. The crushing downward pressure of all of these successive layers altered the chemical composition of the plant and animal remains, creating deep deposits of carbon-rich coal, oil and natural gas. When fossil fuels are burned through combustion, they release their ca...
However, when fossil fuels are burned, they release greenhouse gases (GHGs) like carbon dioxide (C02), methane (CH4) and nitrous oxide (N20) into the atmosphere. When GHGs build up in the atmosphere, they trap the sun’s radiation and prevent it from being released into space, warming Ear...
It's in fact the burning of what we call "fossil carbon" that creates the imbalance: fossil fuels, coal, oil, natural gas. These substances are all mined. We have to dig them up or drill a well to release them. And this is carbon that was in the atmosphere millions of years ago....