2. 外语
  3. Even before modern notions of friction, it was known that greased surfaces move over one another more easily than dry ones.

Even before modern notions of friction, it was known that greased surfaces move over one another more easily than dry ones.

admin2010-01-13  43
问题 Even before modern notions of friction, it was known that greased surfaces move over one another more easily than dry ones.
选项 A、concepts
B、tricks
C、benefits
D、techniques
答案A
解析
转载请注明原文地址:https://kaotiyun.com/show/HkGd777K
本试题收录于： 职称英语综合类基础题库职称英语分类
0

职称英语综合类基础

职称英语

相关试题推荐
随机试题
最新回复(0)