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 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 example of a grade C product is（）.
An engine compartment gasoline fire requires which type of extinguisher?（）
An anchored vessel is servicing an aid to navigation and is restricted in her ability to maneuver. Which lights will she show? （）
Air circulation is caused or affected by（）.
All of the following vessels are “restricted in their ability to maneuver” EXCEPT a vessel （）.
An azimuth angle for a body is measured from the（）.
All towing vessels of 26 feet or longer while navigating are required to carry which item? （）
Explosive and flammable gasses are most likely to be encountered on a vessel（）.
In handling break bulk hazardous materials，it is forbidden to use（）.