试题与答案

学完初中化学知识,化学老师要求同学们整理一下初中化学知识,下列整理的有关化学的知

题型:选择题

题目:

学完初中化学知识,化学老师要求同学们整理一下初中化学知识,下列整理的有关化学的知识内容完全正确的一组是 (    )

A化学之最B符号中数字“2”的意义
地壳中含量多的金属元素:Fe

人体中含量最多的金属元素:Ca

空气中性质最稳定的物质:N2

2O:两个氧分子

:一个氧离子带两个单位负电荷

O2:两个氧原子

C化学记录D物质及其应用
托盘天平称得食盐质量为3.62g

量筒量取9.26mL水

pH试纸测纯碱溶液pH为12.3

一氧化碳:工业上炼铁

食盐:医疗上配制0.9%的生理盐水

碳酸氢钠:面食发酵粉

答案:

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参考答案:B解析:教材中介绍的财务预测的方法包括销售百分比法、使用回归分析技术和使用计算机进行财务预测,其中使用计算机进行财务预测又包括使用“电子表软件”、使用交互式财务规划模型和使用综合数据库财务...

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