单项选择题
A.alter course to starboard and pass port to port
B.alter course to port and pass starboard to starboard
C.decide on which side the passage will occur by matching whistle signals
D.slow to bare steerageway
单项选择题 Two vessels are in an overtaking situation.Which of the lights on the overtaken vessel will the overtaking vessel see（）.
单项选择题 Two barges are being pushed ahead by a tugboat.Which statement is TRUE concerning lights on the barges（）.
单项选择题 The type of fog that occurs on clear nights with very light breezes and forms when the earth cools rapidly by radiation is known as（）.