CO2-selective membranes have a variety of applications, such as synthesis gas purification, natural gas sweetening, and greenhouse gas sequestration. In this study, CO2-selective membranes containing both mobile and fixed carriers in crosslinked poly(vinyl alcohol) were synthesized. Transport properties ...
A. oxygen B. carbon dioxide C. nitrogen D. helium 相关知识点: 试题来源: 解析 B。解析:在气候变化因素中,二氧化碳(carbon dioxide)是主要的温室气体。氧气(oxygen)是人类呼吸所必需的气体,与气候变化关系不大;氮气(nitrogen)是大气中的主要成分,也不是主要的温室气体;氦气(helium)主要用于一些特殊的工业和...
The main greenhouse gas is ___. A. carbon dioxide B. oxygen C. nitrogen D. hydrogen 相关知识点: 试题来源: 解析 A。主要的温室气体是二氧化碳。选项 B 氧气不是温室气体。选项 C 氮气不是温室气体。选项 D 氢气不是主要的温室气体。反馈
Which gas is most responsible for the enhanced greenhouse effect in recent years? A. Oxygen B. Nitrogen C. Carbon dioxide D. Argon 相关知识点: 试题来源: 解析 C。解析:近年来,二氧化碳(Carbon dioxide)对增强温室效应负有最大责任。二氧化碳在大气中的浓度不断增加,它能吸收地面辐射并阻止热量向太空...
Which gas in the atmosphere can cause the greenhouse effect when there is too much of it? A. Oxygen B. Nitrogen C. Carbon dioxide D. Argon 相关知识点: 试题来源: 解析 C。解析:本题考查二氧化碳与温室效应的关系以及词汇辨析。当二氧化碳过多时会导致温室效应。A选项“Oxygen”氧气不会导致温室效应...
The greenhouse effect is mainly caused by certain gases in the atmosphere. Which of the following is one of the main greenhouse gases? A. Oxygen B. Nitrogen C. Carbon dioxide D. Hydrogen 相关知识点: 试题来源: 解析 C。解析:温室效应主要是由大气中的某些气体引起的。氧气是人类呼吸所必需的...
The greenhouse effect is mainly caused by too much ___ in the atmosphere. A. oxygen B. nitrogen C. carbon dioxide D. hydrogen 相关知识点: 试题来源: 解析 C。解析:The greenhouse effect(温室效应)主要是由大气中过多的carbon dioxide(二氧化碳)引起的,C正确。Oxygen(氧气)、nitrogen(氮气)、hydroge...
A. carbon dioxide B. oxygen C. nitrogen D. hydrogen 相关知识点: 试题来源: 解析 A。导致全球变暖的主要温室气体是二氧化碳,所以选 A。B 选项“oxygen”氧气,不是温室气体;C 选项“nitrogen”氮气,不是温室气体;D 选项“hydrogen”氢气,不是主要的温室气体。反馈...
A. Organic farming produces much less foodB. England and Wales have changed their diets.C. Organic farming produces more greenhouse gasesD. England and Wales have to import 40% of their food33. According to Dr Adrian Williams, legumes canA. produce more nitrogenC. store nitrogen in the soil...
The greenhouse effect is caused by an increase in which gas? A. Oxygen. B. Nitrogen. C. Carbon dioxide. D. Hydrogen. 相关知识点: 试题来源: 解析 C。温室效应主要是由二氧化碳等温室气体的增加引起的。氧气、氮气和氢气不是主要的温室气体。