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单选题
Aids to navigation marking the intracoastal waterway can be identified by（）.
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
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考题
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考题
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the coastal navigationB
the celestial navigationC
traditional navigationD
the great circle navigation
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