根据最后一段最后一句“Be-cause exercise requires faster, deeper breathing, itmay make the symptoms worse."可知,当人们运动时,症状最明显,选项中只有D项是运动状态。 结果三 题目 __Air pollution is made up of many kinds of gases, __droplets (小水滴) __and particles that reduce __the quality ...
【题目】Air pollution is made up of many kinds of gases, droplets (小水滴) an d particles that reduce the quality of the air. Air can be pol lute d in both the city an d the country.In the city, cars, buses an d airplanes, as u ell as industries may cause air pollution. In ...
POST a QUESTION or COMMENT about the constituents of air: concentrations of gases in airGases that make up outdoor air: this article provides a table of the components in outdoor air - a list of the various gases found in air by percentage....
It has been proved that aerosols have a remarkable effect on O3 concentration through multiple pathways, including altering photolysis rates through light scattering and absorption, suppressing the development of PBL, and heterogeneous uptake of gases and peroxide radicals (Gao et al., 2018; Li et ...
THE liquefaction of air, and the rest of the so-called permanent gases, is an achievement which belongs to quite recent times. Faraday cooled and compressed gases by such means as were at his disposal, with results which are well known; but it was the experiments of Andrews, published in ...
It is made up of harmful gases, droplets, and particles. These make the air quality(质量) 1 . Many things can cause air pollution. Some air pollution is caused by burning fossil fuels(化石燃料). Oil is used to make gasoline for cars. Cars and trucks 2 a lot of air pollution. Coal ...
解析 【解析】be made up of由..组成的;make u p组成;根据意思:大气中的空气由尘埃和气体组 成. 故选:A. 结果一 题目 【题目】T he air in the atmosphere d ust and gases.( A.is made up of B.is make up of C.make up of D.made up of 答案 【解析】be made up of由..组成的;...
: to make known in public air one's complaints 3 : to broadcast on radio or television Medical Definition air noun ˈa(ə)r, ˈe(ə)r : a mixture of invisible odorless tasteless sound-transmitting gases that is composed by volume chiefly of 78 percent nitrogen, 21 percent...
Not all odors and gases may be supported. → Tested with Coway Airmega 150, 160, Airmega Mighty AP-1512HH, Airmega Mighty AP-1512HHS, 400, 400S 5The coverage area of the air purifier is based on an area where the air cleaner can make two air changes per hour (ACPH). An air ...
Some pollutants, like ozone and greenhouse gases, cover large areas, whereas other more reactive or highly toxic pollutants may only be detectable within a few meters of their source. In the United States, the Environmental Protection Agency (EPA) has established National Ambient Air Quality ...