33. Crash-stop means an emergency __________ operation of the main engine(s) to avoid a
collision.
(A) release
(B) return
(C) revised
(D) reversal
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統計: A(62), B(121), C(111), D(259), E(0) #3246838
統計: A(62), B(121), C(111), D(259), E(0) #3246838