Which is a mixture? A. 外算六每二交列上线般青压图起说干外算六每二交列上线般青压图起说干Air外算六每二交列上线般青压图起说干外算六每二交列上线般青压图起说干 B. 工构主支土工构主支土Carbon dioxide工构主支土工构主支土 C. 八程究东受写增样青济关信住资色内八程究东受写增样...
【题目】T he DialaBus , which is a mixture of an ordinary bus and a tari, can pick up passengersat their doors or at a nearby bus stop shortlyafter they have telephoned for service. T he computer will know the location of its vehicles(车辆),how many passengers are on them,and where...
解析 DThe only correct answer is DA is not correct because sodium is an elementnot a mixtureB is not correct because chlorine is an elementnot a mixtureC is not correct because sodium chloride is apure compound not a mixture 反馈 收藏 ...
Air is a mixture of gases, of which oxgen forms 21 percent.8）有时用case, point, time, situation或reason等抽象名词来总结主句的内容，可用“介词+ which +抽象名词”构成从句 ：Ten years of hard work changed her greatly , for which reason he could hardly recognise her at first sig...
👉Air is a mixture of gases, of which oxygen forms 21 percent. 空气是一种气体了21%。 典例剖析 1.The number of smokers,___ is reported, has dropped by 17 percent in just one year. A.it B.which C.what D.as 2.(2017学年上海外国语...
Air, which (it is) a mixture of elements oxygen and nitrogen (and compounds) water and carbon dioxide, also (contains) small quantities of (many other) substances.A.it isB.and compoundsC.containsD.many other点击查看答案 你可能感兴趣的试题 第1题:nEw-AgE trAnsport it looks As iF it CAmE...
Which of the following is a mixture ? Salt, Air, Water, Alum, Sugar Solution Answer: Air Two matters do not combine with chemically called mixture. Air is the mixture of gases like N2, O2, H2. Alum is an addition compound (pure) (K2SO4. Al2(SO4)3.24H2O). ...
【解析】答案:D核心短语/词汇:by volume:按体积计句子译文:空气一种气体混合物,其中氧气按体积算占其中的21%。解析:本题考查定语从句,先行词是air。,本句可分为两个单句:Air is a mixture of gases(空气一种气体混合物),和Oxygen forms 21% by volume of air(氧气按体积占空气的21%),of表示范围,which代...
原句在从句中I make （it ）myself 中myself是反身代词作主语I的同位语，翻译成“我自己”或“亲自”，不能加by 。即It's a strange mixture(which/that ) I make by myself. 试译为“它是一种我独自/靠自己配制的奇特混合物”。当然在写作中此处有没有by都行，但不能说原句省略了...
Air is a mixture of gases. Which gas is essential for combustion? A. Oxygen. B. Nitrogen. C. Carbon dioxide. D. Hydrogen. 相关知识点: 试题来源: 解析 A。氧气是燃烧必需的气体。B 选项氮气不是燃烧必需的;C 选项二氧化碳不是燃烧必需的;D 选项氢气不是空气中主要成分也不是燃烧必需来自空气。