______ means a white light placed over the fore and aft centerline of the vessel showing an unbroken light over an arc of the horizon of 225 degrees and so fixed as to show the light from right ahead to 22.5 degrees abaft the beam on either side of the ve
发布于 2021-02-23 18:44:26
【单选题】 A Masthead light B Sidelights C Sternlight D Towing light