2. 职称英语
  3. Why didn’t people begin to use unmanned vehicles in undersea exploration until r

Why didn’t people begin to use unmanned vehicles in undersea exploration until r

游客2024-07-30  38
问题 Why didn’t people begin to use unmanned vehicles in undersea exploration until recently?
It is because of the ______.
[br] When must the sonar devices be placed?
Before the ______.
选项
答案 undersea vehicle dives
解析
转载请注明原文地址:http://tihaiku.com/zcyy/3697913.html
相关试题推荐
随机试题
最新回复(0)