单项选择题
On a ship，a fire drill shall be conducted once every（）.
A.week B.month C.crew change D.other week
单项选择题 Lifesaving regulations require that a fire drill include（）.
单项选择题 How long must the records of tests and inspections of fire fighting equipment on board a ship be retained on board?（）
单项选择题 Each crewmember has an assigned firefighting station. This assignment is shown on the（）.
