阿摩線上測驗
2. What day time signal shall be exhibited for a vessel proceeding under sail and also being propelled by machinery in accordance with COLREGS?
(A) A conical shape, apex upwards
(B) A conical shape, apex downwards
(C) A diamond shape
(D) A cylinder shape
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統計： A(0), B(0), C(0), D(1), E(0) #4054235
統計： A(0), B(0), C(0), D(1), E(0) #4054235
