单项选择题
Lighted information markers show（）.
A.green lights
B.red lights
C.yellow lights
D.white lights
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相关考题
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单项选择题
If your vessel were proceeding down river (descending)，a green square marker with a green reflector border on the right bank would be a（）.
A.mile board
B.dredging mark
C.passing daymark
D.crossing daymark -
单项选择题
Environmental loading consists of the forces caused by wind，waves，and（）.
A.drilling
B.soil reactions
C.temperature
D.current -
单项选择题
Entering from seaward，triangular-shaped daymarks are used to mark（）.
A.the starboard side of the channel
B.the centerline of the channel
C.an obstruction where the preferred channel is to starboard
D.special purpose areas
