2. 外语
  3. Why didn’t people begin to use unmanned vehicles in undersea exploration until recently? It is because of the ______. When

Why didn’t people begin to use unmanned vehicles in undersea exploration until recently? It is because of the ______. When

admin2014-10-11  42
问题 Why didn’t people begin to use unmanned vehicles in undersea exploration until recently?
   It is because of the ______.

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:https://jikaoti.com/ti/2c1MFFFM
本试题收录于： 大学英语三级B级题库大学英语三级分类
0

大学英语三级B级

大学英语三级

相关试题推荐
随机试题
最新回复(0)