How many life buoys（）on board with self-igniting light?

单项选择题Frapping lines are fitted to lifeboat davits to（）.

A.reduce the swinging of the lifeboat as it is being lowered from the embarkation level
B.secure the lifeboat in the davits when in the stowed position
C.hold the lifeboat to the ship's side until the tricing lines are passed
D.be used as a safety line in an emergency

单项选择题Fire fighting equipment requirements for a particular vessel may be found on the（）.

A.Certificate of Inspection
B.Certificate of Seaworthiness
C.Classification Certificate
D.Certificate of Registry

单项选择题Each open lifeboat carried on a vessel on an international voyage must have（）.

A.hand-propelling gear
B.a davit span with at least 2 lifelines
C.a mast and a sail
D.a motor

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

A.2 months
B.3 months
C.4 months
D.5 months

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