单项选择题
Damage to another vessel’s cargo，caused by a collision，is covered under which marine insurance policy?（）.
A.Hull B.Fire C.Protection and Indemnity D.None of the above
单项选择题 Carbon dioxide as a fire fighting agent has which advantage over other agents? （）
单项选择题 Before sailing for a foreign port，what document must you get?（）.
单项选择题 Before leaving port on an ocean tow，a tug captain should assure himself of all the following EXCEPT（）.
