19. What is the function of bilge keel?
(A) Reduce rolling.
(B) Reduce pitching.
(C) Reduce yawing.
(D) Increase stability.
答案:登入後查看
統計: A(380), B(76), C(61), D(278), E(0) #2334854
統計: A(380), B(76), C(61), D(278), E(0) #2334854