問題詳情

33.During , the ship is secured to the pier with mooring lines while the main engines are used todrive the propeller.
(A)shop trials
(B)sea trials
(C)dock trials
(D)launched

參考答案

答案：C
難度：適中0.52381
統計：A(20),B(22),C(55),D(6),E(0)