单项选择题 After conducting an abandonment drill，the Master or person in charge of a ship shall log（）.

单项选择题 According to the Code of Federal Regulations，on vessels other than river ferryboats and river vessels，how are periodic lifeboat weight tests required to be conducted?（）

单项选择题 A self-righting survival craft will return to an upright position provided that all personnel（）.