Each lifeboat must be lowered and maneuvered in the water at least once every（）.

单项选择题During the required periodic abandon ship drill aboard a ship，each person not assigned duties in the muster list is（）.

A.instructed in the use of portable fire extinguishers
B.shown a video demonstrating lifeboat launching
C.instructed in the use of life jackets
D.not required to attend the boat drill

单项选择题During a fire drill on a ship，what action is required?（）

A.Start each fire pump
B.Launch and run a lifeboat
C.Inventory rescue and fire equipment
D.Inspect fire hoses

单项选择题After abandoning ship，you should deploy the sea anchor from a liferaft to（）.

A.keep the liferaft from capsizing
B.navigate against the current
C.keep personnel from getting seasick
D.stay in the general location

单项选择题According to the ship regulations，the capacity of a liferaft is required to be marked（）.

A.on the station bill
B.on a sign next to the liferaft
C.on the Certificate of Inspection
D.in the Operations Manual

单项选择题According to the regulations for lifeboat falls，which action must be taken with the falls no later than 5-year intervals?（）

A.Proof tested
B.End-for-ended
C.Renewed
D.Weight tested