Unmanned aerial vehicles (UAV) are too expensive for anything but military budgets.
举一反三
- “Drone”as in the “Drone delivery”refers to Unmanned Aerial Vehicle (UAV) .（ ）
- 无人机简称 UAV(Unmanned Aerial Vehicle),指不载有操作人员可以(A)或( )的飞行器。 A: 自主飞行 B: 遥控驾驶 C: 遥控飞行 D: 自主遥控
- What does the example of three cars explain for? (). A: Unmanned vehicles are much better than manual in term of safe<br/>distance. B: Unmanned<br/>vehicles are much better than manual in term of reaction time. C: Unmanned vehicles can greatly reduce greenhouse gas emissions. D: Unmanned vehicles can greatly increase greenhouse gas emissions.
- According to Sally, what will the investors think of the budgets?They will be ______________ when they see the budgets.
- The<br/>total reaction time of unmanned vehicles is about(). A: 0.6s B: 1.2s C: 0.3s D: 0.2s