首页
登录
职称英语
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_200[/audioFiles] Petrole
[audioFiles]2016m8x/audio_ezfj_ezflisteningd_201607_200[/audioFiles] Petrole
游客
2024-09-18
0
管理
问题
选项
答案
Petroleum
Petroleum has been important since ancient times. / The Greek historian told of its use in the form of pitch for building and road making. /
Petroleum is a fossil fuel. / The liquid comes from the remains of plants and animals / that died millions of years ago. / These remains were buried deep below levels of rock over time and under great pressure. /
This geological process created complex molecules of hydrogen and carbon. / Oil can also contain other elements. / Crude oil, or unprocessed petroleum, / is called sour when it contains a lot of sulphur, an impurity. / Sour crude requires more refining than sweet crude, / which is low in sulphur and, as a result, often more valuable. /
The modern history of oil started in the middle of the 1800s. / At that time, a method was found to make kerosene fuel from petroleum. / This kind of fuel became popular for heating and lighting. /
解析
石油
石油自古以来就非常重要,它是深埋在岩石层下达数百万年的动植物遗体在重压下经年累月形成的。石油的现代史开始于19世纪中期,那时人们已经知道如何从石油中提炼出煤油了。
转载请注明原文地址:https://tihaiku.com/zcyy/3763504.html
相关试题推荐
Textbooks’DigitalFuture[audioFiles]2016m3x/audio_ezfj_125_20162[/audioFiles]
CellPhoneDisturbance[audioFiles]2016m3x/audio_ezfj_020_20162[/audioFiles]
ThanksgivingDay[audioFiles]2016m3x/audio_ezfj_019_20162[/audioFiles]Thanks
DrinktoYourHealth[audioFiles]2016m3x/audio_ezfj_017_20162[/audioFiles]Dr
CartoonArtist[audioFiles]2016m3x/audio_ezfj_016_20162[/audioFiles]Cartoon
American’sPersonality[audioFiles]2016m3x/audio_ezfj_014_20162[/audioFiles]
AmericanChildrenRaising[audioFiles]2016m3x/audio_ezfj_013_20162[/audioFiles]
FeedingYourMind[audioFiles]2016m3x/audio_ezfj_012_20162[/audioFiles]Feedi
OverweightPeopleHaveLowerRiskofDeath[audioFiles]2016m3x/audio_ezfj_269_20
Sleep[audioFiles]2016m3x/audio_ezfj_113_20162[/audioFiles]SleepWhenyo
随机试题
黄河流域(basin)是中国古代文明的发祥地,因此黄河被称作中华民族的母亲河、中华文明的摇篮。TheYellowRiveriscalledthemo
通货膨胀是指商品和服务的货币价格总水平持续上涨的现象。衡量通货膨胀的指数有多个,
某区(县)一工地塔式起重机施工过程中出现吊物坠落伤人事故。接到事故报告后,施工单
特种设备使用单位应当在特种设备投入使用前或者投入使用后()内,向负责特种设
女孩8岁,主诉头晕、心悸1d,阵发晕厥半小时,查心率快,心律不齐,未闻杂音。诊断
根据以下材料,回答题 Lazinessisasin,everyone
小学体育《原地多种姿势拍球》
可见光及紫外光分光光度法测定太浓或太稀的有色溶液的计算方法选用A:标准曲线法B
2020年12月,中国新能源汽车生产销售双增长,产销双双超过20万辆,再创历史新
晋升对企业的作用包括()。 A.有利于专业人才的更新 B.避免各类专业人才
最新回复
(
0
)