2. 外语
  3. The megaphone makes the voice sound louder because it points sound waves in one direction and keeps them from spreading out in a

The megaphone makes the voice sound louder because it points sound waves in one direction and keeps them from spreading out in a

admin2010-01-14  78
问题 The megaphone makes the voice sound louder because it points sound waves in one direction and keeps them from spreading out in all directions.
选项 A、slithering
B、radiating
C、interfering
D、murmuring
答案B
解析
转载请注明原文地址:https://kaotiyun.com/show/3Mhd777K
本试题收录于： 职称英语理工类基础题库职称英语分类
0

职称英语理工类基础

职称英语

相关试题推荐
随机试题
最新回复(0)