单项选择题
What is the lifesaving signal for You are seen -assistance will be given as soon as possible?（）
A.3 white star signals B.Horizontal motion with a white flag C.Vertical motion of a white light D.Code letter K by blinker light
单项选择题 Under the forces of its own weight，the suspended length of line will fall into a shape known as a（）.
单项选择题 There has been a collision in sea area of Fork.（）.
单项选择题 The Master to prosecute all voyages with the utmost（）and to render customary assistance with the Vessel’s Crew.
