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
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Air circulation is caused or affected by（）.
All towing vessels of 26 feet or longer while navigating are required to carry which item? （）
An “ABC” dry chemical fire extinguisher would be LEAST effective against a fire in（）.
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 Loran-C transmitting stations are equipped with cesium frequency standards which permit （）.
An aneroid barometer on a boat should always be（）.
An anchored vessel is servicing an aid to navigation and is restricted in her ability to maneuver. Which lights will she show? （）
All of the following vessels are “restricted in their ability to maneuver” EXCEPT a vessel （）.
An example of a grade B product is（）.
An airplane should NOT send which signal in reply to a surface craft?（）