問題詳情

37. Which is NOT the features of clear air turbulence?
(A)It cannot be identified by sophisticated weather radar systems.
(B)It cannot be seen by naked eye.
(C)It only occurs at very high altitude of calm blue skies.
(D)It is one of the major causes of aircraft accidents.

參考答案

答案:C

統計:A:0,B:0,C:2,D:2,E:0

難度:計算中