单项选择题
A power-driven vessel underway shall keep out of the way of（）.
A.a vessel restricted in her ability to maneuver B.a vessel under command C.a passenger ship D.a seaplane on the water
单项选择题 A power-driven vessel towing another vessel astern (tow less than 200 meters) shall show （）.
单项选择题 A power-driven vessel shall have her engine ready for（）when the visibility is restricted.
单项选择题 A power-driven vessel not under command at night must show her sidelights when（）.
