There are a lot of other gases in the air. Water vapor(水蒸气) and hydrogen(氢) are two examples, but there are only very, very small amounts of them. (1). What is the meaning of the underlined word "represent" in the third paragraph? A. 代表 B. 分解 C. 提取 D. 组成 ...
to think about them.There are four main gases in the air: oxygen (氧气) , nitrogen (氮气), carbon dioxide (二氧化碳)and argon(氩) .If 1,000 dots can represent the air, then 776 of them are nitrogen, 210 are oxygen, 11 are argon.There are a lot of other gases in the air. Wat...
What is the main gas found in the air?Gas Mixture:The main property of a gaseous substance is that it has no defined volume. Its particles are separated by a vast distance, so the particles are not bound to each other and are able to move around the full volume of some closed ...
Question: What gases are in a fluorescent and incandescent bulb? Gas: In physics, the term gas referred to the matter that exists between the plasma and the liquid state. It is one of the four types of matter, and it has the property to occupies all the volume of storage equipment. Ans...
英语语法问题We have learned that air is a mixture of gases,___oxygen,water,vapor and carbon dioxide are the most important for what they do.A.whoseB.in whichC.of whichD.where答案选的是C,想问下为什么不能选D,另外介词为什么
There are a lot of other gases in the air.空气中有四种主要的气体:氧气、氮气、二氧化碳和氩气,空气中有很多其他气体,D选项意为空气中只有六种气体,与原文不符,因此不正确。故选D。(5)B.文章标题题。根据第一段What is air?Air is not just one gas.It is a mixture of different gases.什么是空气...
百度试题 结果1 题目智慧职教: Do you know what ___ so much greenhouse gases in the air?相关知识点: 试题来源: 解析 has produced 反馈 收藏
They are in favor of more money ___8(spend)on research into solar,wind and wave energy devices,which could then replace 9 ___( exist) power stations . Some scientists,however believe that even if we stopped 10___(release) carbon dioxide and other gases into the atmosphere tomorrow,we...
gases such as hydrogen can rapidly combine with gases such as oxygen or chlorine, causing them to combust. Some chemical reactions between gases and other substances occur more slowly. For example, the gradual oxidation of iron results in iron oxide (rust). In this case, oxygen, a gas, comb...
What Are Carbon Credits? Carbon credits are permits that allow the owner to emit a certain amount of carbon dioxide or other greenhouse gases (GHGs). One credit allows the emission of one ton of carbon dioxide or the equivalent of other greenhouse gases. Carbon credits are also known as carb...