CAS 号: 又称CAS 号,是某种物质(化合物、高分子材料、生物序列、混合物或合金)的唯一的 号码。可以避免化学物质有多种名称的麻烦,使数据库的 更为方便。
手机使用
分享
复制链接
新浪微博
分享QQ
微信扫一扫
微信内点击右上角“…”即可分享
反馈
参考答案:
举一反三
【简答题】Suppose that this year's money supply is $500 billion, nominal GDP is $10 000 billion, and the economy's output of goods and services is $5 000 billion. a) what is the price level? What is the velocit...
【单选题】4 The partner responsible for this review engagement has asked you to tell him what level of assurance you believe YHT & Co should provide, and also what type of opinion the firm should give. What is ...