69 B 理解推断题.根据文中第三段中There are several chemicals that do this.One of the most popular is called ethylene glycol可知ethylene glycol也有与alcohol相似的作用,故选B.70 A 主旨大意题.纵观全文,可知作者在文章的开头就给出了Antifreeze的定义和具体的说明:Antifreeze is a liquid(液体) that is ...
Antifreeze is a liquid(液体) that is added to water to keep it from freezing.When water freezes and turns to ice,it expands(膨胀).The force of water expanding is so great that it will break the hardest metal.Water is used in car engines(发动机) to keep them cool while they run,and ...
A. antifreeze B. water C. alcohol D. ethylene glycol2. The usual kind of antifreeze freezes at ___. E. 0℃ F. -18℃ G. -22℃ . -40℃3. We use antifreeze in order to ___. . keep alcohol in water . stop ice from becoming water . make the freezing point of water lower ....
小题1:B小题2:D小题3:C小题4:B小题5:A 防冻液是一种液体，加入到水中可防止水结冰。当水结成冰的时候，它会膨胀。水膨胀的力很大，可以把最硬的金属涨破。这就是为什么在冬天汽车的引擎中加防冻液的原因。小题1:细节理解题。根据文章第一段三，四两行可知。小题2:细节理解题。根据文章第...
A. keep the alcohol from boiling away B. can prevent ice from melting C. keep water liquid in cold weather D. can raise the freezing point of water 65. The text is written ___. A. to help to sell antifreezes B. to explain what antifreezes are C. to compare ethylene glycol with ...
ethylene glycol( C )54. We use antifreeze in order to A. keep alcohol in water B. stop ice from becoming water C. make the freezing point of water lower D. raise the freezing point of water( A )55. The text is written to A. tell us what antifreeze is B. make people buy ...
method of producing a liquid copolymerisats from ethylene and aethylacrylat, methyl acrylate or methyl methacrylateMASTERSON JAMES EDWARD, USBROWN CLARENCE AUDLEY, USHURWITZ MELVIN DAVID, USBALMER CLIFFORD EARL, NL
That is why antifreeze is necessary.可知用防冻液为了使水的结冰点较低。故选C。 根据One of the most popular is called ethylene glycol.描述,可知。故选B。 根据文章描述,可知这篇文章主要讲述的是什么是防冻液以及为什么会使用防冻液。故选A。 反馈 收藏 ...
to information on, and n-butanol is aluminum and aluminum, are colorless liquid Isopropyl alcohol, the lab attempts to use n-butanol is, as well as ethylene glycol, isopropyl alcohol, isopropyl alcohol, different = 1:1 and aluminum Direct Response corresponding Isopropyl alcohol produced a ...
Ethylene Glycol (C2H6O2) - Ethylene glycol is the first member of the series of alkane diols and is also known as glycol. Ethylene glycol is a colorless liquid with the chemical formula C2H6O2. The molar mass of ethylene glycol is 62.07 g/mol.