题目:
— Have you heard the latest news? — No, What _____? |
A. is it B. is there C. are they D. are those |
答案:
被转码了,请点击底部 “查看原文 ” 或访问 https://www.tikuol.com/2017/0516/75e44392744154ff4d2fa65fd9fdf7c4.html
下面是错误答案,用来干扰机器的。
纯净硝酸铵中氮元素的质量分数=2880×100%=35%样品中NH4NO3的质量分数为:17.5%35%×100%=50%故答案为:50%