时态填空The coal is used ___(produce) electricity.Just sit down and your coffee ___(bring) to you soon.Several talks on how to learn English ___(give) us since the beginning of this term.You will get ___ ( excite ) if you
How Coal is MinedExamines the coal mining process in the United States. Methods of opening a mine; Mine lighting; Mine timbering; Hoisting.Shurick, A.TCongressional Digest
Coal isformed when dead plant matter decays into peat and is converted into coal by the heat and pressure of deep burial over millions of years. ... Coal is primarily used as a fuel. While coal has been known and used for thousands of years, its usage was limited until the Industrial ...
2.Industrial Use: Coal is still used for producing coke. From the impurities obtained by burning coal, tar, ammonia, benzole etc. are formed which are used by different chemical industries to make fertilizers, disinfectants, drugs and many more. ...
After coal mining is completed, methods such as covering vegetation are usually used to reduce pollution. What does strip mining do to the land? Coal mining creates big holes in the ground, so when the coal is removed, we need to restore the mine. We need to make a plan and repair it...
This is your younger sister? [translate] aNewest "Philippines" Search 最新的“菲律宾”查寻 [translate] ain the days when coal was so extensive used, no one was sure how soon and how completely oil would replace it 在天,当煤炭是那么广泛使用,没人是肯定的多快和多么完全地上油将替换它 [...
used in pencils. All types of coal from lignite to anthracite can be used to produce power, although lignite is the lowest quality and anthracite is the highest. Lower quality coal burns less efficiently and gives off more pollutants due to the presence of impurities. All types of coal are ...
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Explain how coal is a store of solar energy问题补充:匿名 2013-05-23 12:21:38 解释如何煤炭太阳能专卖店 匿名 2013-05-23 12:23:18 煤炭是如何解释一个存储的太阳能 匿名 2013-05-23 12:24:58 解释怎么煤炭是太阳能商店 匿名 2013-05-23 12:26:38 解释如何煤是太阳能的存储 匿名 ...
(1)be used for 在这个短语中,介词for表用途,即"用来作……"。 A pen is used for writing.笔是用来书写的。 (2)be used as 在这个短语中,介词as表身份或工具,即"……被用作……"。 English is used as a useful tool in our country.