The most common gas in the air is ___. A. oxygen B. nitrogen C. carbon dioxide D. hydrogen 相关知识点: 试题来源: 解析 B。空气中最常见的气体是氮气(nitrogen)。氧气(oxygen)含量次之。二氧化碳(carbon dioxide)和氢气(hydrogen)在空气中的含量相对较少。
1. Composing about 78 percent of the air at sea level, what is the most common gas in the Earth's atmosphere? 2. The Austrian monk Gregor Mendel's observations of what organism formed the basis for the science of genetics? 3. What term, which means the maximum absolute value of a ...
Most air pollution is caused by the burning of ___ like coal, gas and oil.A. fuels B. articles C. goods D. products 相关知识点: 试题来源: 解析 A 本题考查名词的词义辨析。A.fuel:燃料;B.article:物品;C.goods:货物、商品;D.product:产品。根据题干已知信息---大多数空气污染都是由燃烧诸...
Most air pollution is caused by the burning of ___ like coal, gas and oil.A:fuelsB:articlesC:goodsD:products 相关知识点: 试题来源: 解析 A 本题主要考查名词词义。A项,fuel 意为“燃料;刺激因素”。B项,article 意为“文章;物品”。C项,goods 意为“货物”。D项,product 意为“产品;结果”...
本题考查名词辨析.fuel燃料,articles文章,物品,goods商品,products产品.根据句意和coal,gas可知答案.故选:A.大多数空气污染是由燃烧煤、天然气和石油等燃料引起的.本题考查名词词义辨析,考生在平时的学习中应注意积累相应的词汇和搭配,并牢记其意思.在做题时,将词义和题干相结合,从语法、句子结构尤其是句意上去判断...
相关知识点: 试题来源: 解析 [答案] A [解析] 该题考查考生对题干中句子含义的理解以及对选项中名词含义的理解。由题干中 的” coal, gas, oil ”可知都是正正确答案为A。B项为“物品” C项为“货 物,商品” D项为“产品”。反馈 收藏
Most air pollution is caused by the burning of___like coal,gas and oil.A.fuels B.articles C.goods D.products相关知识点: 试题来源: 解析 A 句意为:空气污染主要是由燃烧煤、天然气和石油等燃料引起的。fuel燃料;article物品,商品,物件;goods商品,货物;product产品,产物。反馈 收藏...
解析 A.fuels 本题考查名词的用法。①句意分析。“大多数空气污染是由燃烧煤、天然气和石油等引起的。”②对比选项。.fuel燃料;.articles文章,物;.goods商品;.products产品。③解题要点。题干中的coal,gasandoil均为燃料。因此本题答案为fuels燃料,选择项。
Most air pollution is caused by the burning of ___ like coal, gas and oil. A. fuels B. articles C. goods D. products E. 。根据空格后的like coal, gas and oil可知,此题应填fuels,因为coal, gas, oil均属于fuel。 相关知识点: 试题来源...
1 Most air pollution is caused by the burning of ___ like coal, gas and oil. A.fuelsB.articlesC.goodsD.products 2Most air pollution is caused by the burning of ___ like coal, gas and oil. [ ]A. fuels B. articlesC. goods D. products 3Most air pollution is caused by the...