Acids are chemical compounds that, in water solution, have a sharp taste, a corrosive action on metals, and the ability to turn certain blue vegetable dyes red.酸是一种化合物,它在溶于水时具有强烈的气味和对金属的腐蚀性,并且能够使某些蓝色植物染料变红。 例句: 用作名词 (n.) Acids react ...
Hydrocarbons also contribute both to acid rain and to ozone formation.碳氢化合物也导致酸雨和臭氧的形成。Add more sugar if it tastes too acid. 如果味道太酸就多加些糖。These plants prefer an acid soil. 这些植物喜欢酸性土壤。These wines may taste rather hard and somewhat acid. 这些酒可能喝着比...
Acid rain(酸雨) is very harmful to the environment because it makes living things die. Acid rain affects life in the water as well as life on the land. It is even worse in the water because the fish need the water to breathe. When the water gets polluted, the fish get sick and end...
water plus a salt. Carboxylic acids with six or fewer carbon atoms are freely or moderately soluble in water; those with more than six carbons are slightly soluble in water. Soluble carboxylic acid dissociate to an extent in water to yield hydrogen ions. The pH of solutions of carboxylic ...
Acids produce positively charged hydrogen atoms when dissolved in water.酸在水中溶解时可生成带正电荷的氢原子。 Strong acids attack metals.强酸腐蚀金属。 The acid burnt a hole in the carpet.酸把地毯烧了个洞。 Acids are usually sour and can often burn holes in or damage things they touch.酸通...
故选B项。 39. G项的“ He discovered the relationship between”和上一句的“was first discovered”相对应。 故选 G项。 40. C项的“public attention to acid rain”和上 文的“did not gain much public attention”相对应。 故选C项。 反馈 收藏 ...
aInstead, your driver will communicate to the USB host controller, which will communicate on the bus on your behalf. 正在翻译,请等待...[translate] amy baay 我baay[translate] ahard yellow 坚硬黄色[translate] athe improved application of simulation technique during the[translate] ...
十一、阅读理解。(一)根据短文内容,判断句子正(T)误(F)。Acid rain(酸雨) is a type of pollution. Smoke and
vitamin C is a well-known anti-oxidant. Its effect on free-radical formation when topically applied to the skin by means of a cream has not been clearly established. The effectiveness of topical applications has been questioned due to vitamin C’s instability (it reacts with water and degrad...
Nothing! The acid content isn't high enough to harm humans, and it doesn't affect the taste ofthe water, either. 那倒没事。雨水的酸含量不高,不会对人体造成什么伤害,也不会影响水的味道。 But acid rain can damage lakes, streams, and harm trees at high elevations. 但是,酸雨会影响湖泊...