题海让大学四年没有难题
白天模式登陆

题目详情

多选题 Instead of using a steam engine,as Langley had done,they decided to use a petrol engine,which was smaller and lighter and more efficient. The sentence tells us that_______________

A. Langley used a steam engine

B. Langley did not use a steam engine

C. They used a steam engine

D. A petrol engine was lighter than a steam engine

默认课程课程封面

学科:默认课程

时间:2025-12-10 06:30:55

Copyright © 2022 津ICP备2021001502号