A.fuel
B.electricity
C.oxygen
D.heat
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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
A.the letters ICW after the aid's number or letter
B.yellow stripes，squares，or triangles marked on them
C.white retroreflective material
D.the light characteristic and color for lighted aids
A.Bayou Sara
B.Baton Rouge
C.Head of Passes
D.Red River Landing
A.Thimble Shoal Main Channel or the South Auxiliary Channel
B.Any of the channels but keep to the right hand side
C.The South Auxiliary Channel
D.Thimble Shoal Main Channel
最新試題
An engine compartment gasoline fire requires which type of extinguisher?（）
An advantage of using chain lashing on heavy vehicles aboard Ro-Ro vessels is that it（）.
An “ABC” dry chemical fire extinguisher would be LEAST effective against a fire in（）.
All of the following are part of the fire triangle EXCEPT（）.
An advantage of the Christmas Tree towing method is to（）.
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 vessels are “restricted in their ability to maneuver” EXCEPT a vessel （）.
An example of an anchor which has a stock is a（）.
All OSV personnel should be familiar with survival craft（）.
An anchored vessel is servicing an aid to navigation and is restricted in her ability to maneuver. Which lights will she show? （）