A.boarding and operating procedures
B.maintenance schedule
C.navigational systems
D.fuel consumption rates
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A.laying a pipeline
B.dredging
C.mineclearing
D.not under command
A.location
B.height of light above water
C.luminous range
D.light characteristics
A.fuel
B.electricity
C.oxygen
D.heat
A.every station in one chain to transmit at the same time
B.each station to transmit without reference to another station
C.on-line transmission of single-line transmitters at the same time
D.each station to only depend on the master for synchronization and signal ratio
A.the rotation of the earth on its axis
B.convection currents caused by differences in radiant heating between equatorial and polar regions
C.mountain ranges
D.All of the above
最新試題
An engine compartment gasoline fire requires which type of extinguisher?（）
All portable fire extinguishers must be capable of being（）.
An icebreaker assisting a vessel through an ice field would display a visual signal consisting of the code letter “E” (Echo) to signify that “（）”.
All of the following information concerning lighted aids to navigation may be read directly from the Light List EXCEPT the（）.
An example of a grade C product is（）.
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? （）
An all-round flashing yellow light may be exhibited by a(n)（）.
An icebreaker displaying a flag hoist which consists of the code letters “WO” (Whiskey Oscar) is indicating that（）.
Antiseptics are used principally to（）.
Aids to navigation marking the intracoastal waterway can be identified by（）.