二二复制系统

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二二复制系统
一定量的某可燃物在足量氧气中充分燃烧得到44g二氧化碳和36g水.则另取该可燃物16g在氧气中完全燃烧,消耗氧气24g.该可燃物的组成元素为 ( ),各元素的质量比为 ( ). 恐龙蛋属于什么化石? 氯化铵在30°C的溶解度是40g,若在30°C时,50g氯化铵投入80g的水中形成溶液后,氯化铵溶液的溶质质量分数为多少? 高一数学 等比数列前n项求和求下列各数列的前n项和Sn(1)1/2,2又3/4,4又7/8,…..(2n-2+2的n次方-1/2的n次方). We should practice speking English in and after class.Yes,we_____.A.more,betterB.the more;the betterC.much;betterD.the often;the better 猛犸象牙化石市场价多少钱 我想要一块猛犸象牙臼齿化石 求鉴定是不是猛犸象牙化石求鉴定是不是猛犸象牙,品相这个咋说 这是挖出来的象牙化石,说是猛犸的 猛犸象牙化石值多少线?约1.5m长,35kg,品相一般. 如何到达戏院【汉译英】 5道化学题目,初中的,奥赛的,题目答案解题过程. Every student in our class are preparing for the coming English test. 我有猛犸象齿牙化石为幼象牙齿 如有人收藏请留言 I have English class on Tuesday.为什么没有an或是class用复数呢? what value will there be in life if we are not together? SAT语法求解,谢You cannot expect to treat your friends badly< and no one notices.>(A) and no one notices(B) and have no one noticeA为什么比B好?谢为什么B比A好?不好意思 SAT 语法,Samuel Adams was by no means the first American to espouse the democratic cause,but he has been the first who conceived the party machinery that made it practicalThe educator’s remarks stressed that well-funded literacy programs are need 1,the figures cited in the report do not collaborate the author's claim that small hospitals generally provide better patient care than do large ones答案是collaborate 错了,为什么呢?2.new zealand had fostered a thriving local music scene for sat语法求解 We are talking about how to learn English well.对画线部分提问 --------------------------画线部分:how to learn English well the five autobiographical volumes by maya angelou begin with……and culminate……我觉得begin和culminate应该用过去式啊?为什么现在时 Terrenz 这个人名读音的音标,是拉丁文么?是否与Terrenz一样,是什么语言? terrenz这个人名,应该如何发音,烦请给个音标另外重音在哪, 该成一般疑问句并作肯定肯定回 we speak english in our english class 10题,急用, 隐 秘造句诱惑,一瞬间, 请问,“创新”用拉丁语及西班牙语怎么说?最好有音标,能按着音标拼出读音来. 把质量为1kg的铁块放在炉火中加热一段时间,然后投入质量为5kg,温度为10度的水中,水的温度升高了20度,试求炉火的温度 (C铁=0.46*10^3j/kg*c)为什么我算出来是913摄氏度啊?t铁为什么要减去30?回 广州贯日翻译公司怎么样啊?译员的水平如何? 广州译雅馨翻译公司怎么样? 请问广州贯日翻译公司的译员资质怎样?