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【判断题】
2019年是中美两国建交40周年。A.
正确
B.
错误
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【简答题】What’s Polly to me, or meto Polly?
【简答题】恒压源与恒流源之间( )等效变换关系。
【多选题】仔细观察下面句子中的划线部分的句子,选择与例句结构一样的句子 Autopilot software is used on both manned and unmanned aircraft, with varying feature sets.
A.
System hardware for small UAVs is often called the Flight Controller (FC), Flight Controller Board (FCB) or Autopilot.
B.
Battery elimination circuitry (BEC) is used to centralize power distribution and often harbors a microcontroller unit (MCU).
C.
The first time UAVs were used as proof-of-concept
D.
The U.S. Military UAV tier system is used by military planners
E.
Vehicles can be categorised in terms of range/altitude.
F.
The following has been advanced as relevant at industry events