单项选择题

When making landfall at night，you can determine if a light is a major light or an offshore buoy by（）.

A.the intensity of the light
B.checking the period and characteristics against the Light List
C.the color，because the buoy will have only a red or a green light
D.Any of the above can be used to identify the light

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单项选择题

When entering from seaward，a buoy displaying a single-flashing red light would indicate （）.

A.a junction with the preferred channel to the left
B.a sharp turn in the channel to the right
C.the starboard side of the channel
D.a wreck to be left on the vessel's port side

单项选择题

When entering a channel from seaward，the numbers on buoys（）.

A.are the same as their Light List number
B.are marked in 6 inch figures with retroreflective material
C.increase with the even numbers to starboard
D.decrease with the odd numbers to starboard

单项选择题

When approaching a preferred-channel buoy，the best channel is NOT indicated by the（）.

A.light characteristic
B.color of the uppermost band
C.shape of an unlighted buoy
D.color of the light