A、the differing light colors
B、one system having odd numbers while the other system has even numbers
C、one system using horizontal bands while the other system uses vertical stripes
D、the difference in the periods of the light
更多“Two navigational hazards are located near to each other，but each is marked by an individual cardinal buoyage system. The buoys of one cardinal system may be identified from the other system by（）.”相关的问题
A、two all-round red lights in a vertical line B、two yellow towing lights in a vertical line C、two white masthead lights in a vertical line D、two lights on the stern，one yellow and one white
A、To navigate intentionally B、To navigate intensely C、To navigate carefully D、To navigate completely
A、To navigate intentionally B、To navigate intensely C、To navigate carefully D、To navigate completely
A、the coastal navigation B、the celestial navigation C、traditional navigation D、the great circle navigation
A、At least two lifeboats B、A radiotelephone C、A radio direction finder D、None of the above
A、It's of no use for navigation and would be removed with notice B、It's useful in navigation and may be removed without notice C、It's helpless in navigation and may be removed without notice D、It's helpful in navigation and may be removed without notice
A、navigating with a low diesel engine speed B、navigating with a stable diesel engine speed C、increasing the efficiency of propeller D、increasing fuel injection
A、leaked into navigable waters B、poured into navigable waters C、pumped into navigable waters through a fixed piping system D、all of the above
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