单项选择题
What is(are) standard operating procedure(s) used on a Ro-Ro vessel? （）
A.Periodic inspection and retensioning of lashings as required during voyage B.Lashings may be completed after the vessel leaves port C.One QMED assigned to oversee the initial loading and lashing D.All of the above
单项选择题 What is TRUE of pressure/vacuum valves? （）
单项选择题 What is required to be posted in the pilothouse of a vessel? （）
单项选择题 What is required to be posted in the pilothouse of a vessel?（）
