单项选择题
Customs officers，upon boarding a vessel desiring entry into one of their port，would inspect which document?（）
A.Cargo Manifest B.Certified Crew List C.Stores List D.All of the above
单项选择题 Blocks and falls used as lifeboat gear must be designed with a minimum safety factor of（）.
单项选择题 BHP stands for the（）of the main engine.
单项选择题 Before starting to hoist provisions，which should be checked?（）
