A.location
B.height of light above water
C.luminous range
D.light characteristics
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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
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
最新試題
An example of a grade B product is（）.
An advantage of using chain lashing on heavy vehicles aboard Ro-Ro vessels is that it（）.
All towing vessels of 26 feet or longer while navigating are required to carry which item? （）
All personnel on board a vessel should be familiar with the rescue boat’s（）.
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 airplane should NOT send which signal in reply to a surface craft?（）
In respect of carrier’s liabilities，responsibilities，rights and immunities the（）contained in the International Convention for the Unification of Certain Rules Relating to Bills of Lading，signed at Brussels on August 25，1924，shall be applied.
All OSV personnel should be familiar with survival craft（）.
An entry of water，gas，oil，or other formation fluid into the wellbore is called a（）.
An example of a grade C product is（）.