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【单选题】
CFD could be a substitution of wind tunnel tests under ____.
A.
High angle of attack situation
B.
Normal wind tunnel tests
C.
Separate flow situation
D.
Complex flowing control situation
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参考答案：
参考解析：
刷刷题刷刷变学霸
举一反三
【单选题】At the end of the cleaning process, the carbon dioxide
A.
is released into the air.
B.
is disposed of with the waste.
C.
is collected ready to be re-used.
【多选题】The main stages in aerodynamic design method and process of aircraft include: ____.
A.
The investigation and demonstration
B.
The concept and preliminary design
C.
The wind tunnel test and verification
D.
The flight tests