单项选择题
Prior to being able to sail in a US port，each vessel that carries grain in bulk must have a certificate of loading issued by the（）.
A.American Bureau of Shipping B.Lloyds of London C.National Cargo Bureau D.US Salvage
单项选择题 Assuming an even transverse distribution of weight in a vessel，which condition could cause a list?（）.
单项选择题 Bulk cargo refers to（）.
单项选择题 If a vessel takes a sudden severe list or trim from an unknown cause，you should FIRST（）.
