单项选择题
A.forty two months from the date of manufacture
B.thirty six months from the date of the last inspection
C.twenty four months from the date of approval
D.twelve months from the date of purchase
单项选择题 The regulations require that inspected vessels on an international voyage，other than small passenger vessels，must carry which of the following distress signals on or near the navigating bridge?（）
单项选择题 The Navigation Rules state that a vessel shall be operated at a safe speed at all times so that she can be stopped within（）.
单项选择题 The distress message of a ship should include considerable information which might facilitate the rescue. This information should（）.