大学MOOC Explore the Materials——From an Atom to a Device(北京航空航天大学)1463730162 最新慕课完整章节测试答案
Chapter 1 Materials and Devices An Introduction
第一章测验
1、单选题:
The basic unit of materials is_____, which can bond directly together to form materials, or convert into ions, or assemble into molecules.
选项:
A: nucleus
B: electron
C: proton
D: atom
答案: 【 atom】点我阅读全文







