A、three months
B、six months
C、twelve months
D、eighteen months
更多“On a ship，firefighting equipment must be inspected once every（）.”相关的问题
A、There are several types of hatch covers on board ship. B、There are several types of hatches on board ship. C、There is one type of hatches on board ship. D、There is one type of hatch covers on board ship.
A、Sailors should know the SWL of cranes on board their ship. B、Sailors should know the SWL of derricks on board their ship. C、Officers should know the SWL of derricks on board their ship. D、Officers should know the SWL of cranes on board their ship.
A、Cleaning is a frequent job at sea. B、Painting is a frequent job on board a ship. C、Cleaning is a frequent job on board a ship. D、Repairing is a frequent job on board a ship.
A、The basic types of paint used on a ship are primer, undercoat and topcoat. B、The basic types of paint used on a ship are topside paint, undercoat and top coat. C、The basic types of paint used on a ship are boottopping, topside and undercoat. D、The basic types of paint used on a ship are cement wash, undercoat and topside.
A、One ring life buoy B、One ring life buoy on each side of the ship C、Three ring life buoys D、Two ring life buoys on each side of the ship
A、A.Bow to the sea and no way on your vessel B、B.Sea on the lee quarter with ship moving ahead slowly C、C.Sea on the weather bow and ship moving ahead slowly D、D.Sea on the quarter with sternway on the ship
A、On the Ship Station License B、On the side of the EPIRB transmitter C、In the radio log D、On the Certificate of Inspection
A、In the rig safety manual B、On the Certificate of Inspection C、On the Ship Station License D、On the rig Watch Bill
A、more than 6 short blasts and 1 long blast on the whistle，and the same signal on the general alarm B、continuous sounding of the ship's whistle and the general alarm for at least 10 seconds C、1 short blast on the whistle D、alternating short and long blasts on the ship's whistle
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