单项选择题
On entering from seaward，a starboard side daymark will（）.
A.show a fixed red light if lighted B.show a Morse (A) white light C.be square in shape D.have an even number if numbered
单项选择题 Navigation lights must be displayed in all weathers from sunset to sunrise. They also（）.
单项选择题 Lighted information markers show（）.
单项选择题 If your vessel were proceeding down river (descending)，a green square marker with a green reflector border on the right bank would be a（）.
