阿摩線上測驗
19. What is the function of bilge keel?
(A) Reduce rolling.
(B) Reduce pitching.
(C) Reduce yawing.
(D) Increase stability.
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統計： A(386), B(79), C(62), D(282), E(0) #2334854
統計： A(386), B(79), C(62), D(282), E(0) #2334854
