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【多选题】
Corresponding auxiliary landing measures could use during landing process of airplane are: ____.
A.
Open the drag parachutes
B.
Open the air brake
C.
Using arrester hook
D.
Using thrust reverser
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参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】Boeing's "Scan Eagle" adopts ____ as launch method.
A.
Zero-length launch
B.
Carrier-borne air launch
C.
Catapult launch
D.
Container launch
【多选题】The launch modes of UAV including: ____.
A.
Zero-length launch
B.
Carrier-borne air launch
C.
Vertical take-off
D.
Throwing launch
【单选题】The overload of a UAV when it touches the arresting net should not lager than ____.
A.
3g
B.
4g
C.
5g
D.
6g
【多选题】The UAV of landing and recovery methods including: ____.
A.
Helicopter aerial recovery
B.
"sky hook" recovery
C.
Parachute recovery
D.
Tail hook arresting recovery