2. 外语
  3. Ammonia, one of the earliest known nitrogen compounds, was originally produced by dis-tilling organic materials.

Ammonia, one of the earliest known nitrogen compounds, was originally produced by dis-tilling organic materials.

admin2012-07-29  130
问题 Ammonia, one of the earliest known nitrogen compounds, was originally produced by dis-tilling organic materials.
选项 A、masses
B、fabrics
C、substances
D、liquids
答案C
解析 物质
转载请注明原文地址:https://kaotiyun.com/show/4dmd777K
本试题收录于： 职称英语卫生类A级题库职称英语分类
0

职称英语卫生类A级

职称英语

相关试题推荐
随机试题
最新回复(0)