A.blue rotating light
B.intermittent flashing amber/yellow light
C.flashing white light
D.flashing sidelight
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A.located in an air-conditioned area
B.mounted in the passenger compartment
C.protected by a collision bulkhead
D.permanently mounted
A.Three lights in a vertical line，the highest and lowest red and the middle white，and anchor lights
B.Three lights in a vertical line，the highest and lowest red and the middle white，ONLY
C.Anchor lights ONLY
D.Anchor lights and sidelights ONLY
A.vessel laying cable
B.vessel towing a submerged object
C.vessel not under command
D.air cushion vessel
A.Opening and closing the throttle
B.Rocking the wings
C.Flashing the navigational lights off and on
D.Flashing Morse T
A.has long life
B.is light weight
C.absorbs shock
D.has fine adjustment
最新試題
Aids to navigation marking the intracoastal waterway can be identified by（）.
An inflatable liferaft is floating in its container，attached to the ship by its painter，as the ship is sinking rapidly. Which action should be taken with respect to the liferaft container? （）
All portable fire extinguishers must be capable of being（）.
Explosive and flammable gasses are most likely to be encountered on a vessel（）.
Air circulation is caused or affected by（）.
An “atoll cloud” forming over an island due to heating of the land during the daytime would be which type? （）
An icebreaker may use the code letter “K” to remind ships of their obligation to listen continuously on their radio. This signal may be made by any of the following EXCEPT（）.
An indirect radar echo is caused by a reflection of the main lobe of the radar beam off the observer’s vessel. Which of the following is NOT a characteristic of indirect echoes? （）
All of the following are part of the fire triangle EXCEPT（）.
An all-round flashing yellow light may be exhibited by a(n)（）.