petroleum is to industry what blood is to man. 石油对于工业就如同血液对于人体 sth is to sth What sth is to sth 特殊句型,固定的,记住就好! a new factory has been built in what was a wasteland. 新工厂建在曾经是一片废墟的地方. what was a wasteland在句子中作宾语,多以不能用that 或是 ...
aPetroleum gas, commonly called natural gas to distinguish it from manufactured gas, consists of the lighter paraffin hydrocarbons, of which the most abundant is methane gas (CH4). The semisolid and solid forms of petroleum consist of the heavy hydrocarbons and bitumens. 石油气体,共同地称区别它...
Which of the following is NOT fossil fuel?(A) Natural gas(B) Petroleum(C) Coal(D) Tide 相关知识点: 试题来源: 解析 (D) Tide 化石燃料是由古代生物遗骸经长期地质作用形成的能源,包括煤炭(C)、石油(B)和天然气(A)。潮汐能(D)则由月球和太阳引力作用形成,属于可再生能源,不属于化石燃料。因此,...
the ground at an oil field may subside as oil is removed.The Wilmington field near Long Beach, California, has subsided nine meters in 50 years; protective barriers have had to be built to prevent seawater from flooding the area.Finally, the refining and burning of petroleum and its products...
Anotherreasonforbanningplasticbagsistheirburdenonfossilfuel.Plasticisnotonlymadefrompetroleum:producingittypicallyrequiresalotoffossil-fuel-derivedenergy.Thefactthattheuseofmillions,orevenbillionsofplasticgrocerybagseachyearmeanswearedrillingfororareimportingmillionsofbarrelsworthofoilandnaturalgasforaconvenientwaytocarry...
它改进HEMT或小型化的CMOS组分的操作。 它为HEMT应用提供一个结构有一个好导热性和电子半绝缘的特征即。 它是高度抗拒的。[translate] aWhich country is the biggest consumer of petroleum? 哪个国家是石油最大的消费者?[translate]
1.According to paragraph 1, petroleum is formed in which of the following ways? A. Bacteria and tiny plants undergo a change while they are buried in clay B. Carbon and hydrogen combine to form shale C. Ocean rocks are converted into organic compounds ...
结果1 题目 35 Petroleum is a mixture of different hydrocarbons.Which process is used to separate the petroleum into groups of similar hydrocarbons? C A combustion B cracking C fractional distillation D reduction 相关知识点: 试题来源: 解析 C 反馈 收藏 ...
Petroleum products vary greatly in physical appearance: thin, thick, transparent or opaque, but regardless, their chemical composition is made up of two elements: carbon and hydrogen, which form compounds called hydrocarbons. Other chemical elements found in union with the hydrocarbons are few and ...
1On the international market, the price of petroleum has been falling down, which is now ___ it used to be. A. as one third as B. one third as much as C. one third more than D. as one third much as 2On the international market, the price of petroleum has been falling down,...