单项选择题
Two short blasts of the whistle have all of the following meanings EXCEPT（）.
A.I intend to meet you starboard to starboard B.I do not intend to hold course and speed C.I intend to overtake you on your port side D.I intend to alter my course to port
单项选择题 Which vessel，when anchored at night，is NOT required to show anchor lights?（）.
单项选择题 While underway，in fog，you hear a whistle signal of one prolonged blast followed by two short blasts. This signal is sounded by a vessel（）.
