默认题库 - 地文航海

单选题

What indicates a dual purpose buoy? （）

A. Red buoy with a horizontal yellow band
B. Red and white vertically-striped buoy with a vertical yellow stripe
C. Red and white vertically-striped buoy with a red spherical topmark
D. Green buoy with a yellow square

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单选题

When a buoy marks a channel bifurcation，the preferred channel is NOT indicated by（）.

A. the shape of an unlighted buoy
B. the light color of a lighted buoy
C. the color of the topmost band
D. whether the number is odd or eve

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单选题

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

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单选题

When navigating a vessel，you（）.

A. can always rely on a buoy to be on station
B. can always rely on a buoy to show proper light characteristics
C. should assume a wreck buoy is directly over the wreck
D. should never rely on a floating aid to maintain its exact positio

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单选题

When using a buoy as an aid to navigation which of the following should be considered?（）

A. The buoy should be considered to always be in the charted location
B. If the light is flashing，the buoy should be considered to be in the charted location
C. The buoy may not be in the charted position
D. The buoy should be considered to be in the charted position if it has been freshly painted

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单选题