12. What do we call a point of contact between the turning circle and the middle line of a
ship?
(A) Pitch point.
(B) Metacenter.
(C) Gravity center.
(D) Pivot point.
答案:登入後查看
統計: A(73), B(56), C(89), D(474), E(0) #3209677
統計: A(73), B(56), C(89), D(474), E(0) #3209677