問題詳情

7. _______means: An emergency reversal operation of the main engine to avoid a collision.
(A) Emergency -stop
(B) Crash-stop
(C) Drop-back
(D) Backing-engine

參考答案

答案：B
難度：簡單0.741935
統計：A(6),B(23),C(2),D(0),E(0)