A.encountered
B.met
C.contacted
D.seen
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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
A.the light-house
B.the anchorage
C.the pilot station
D.the light-buoy
A.deep laded vessels
B.deeply load vessels
C.deep loading vessels
D.deeply loaded vessels
A.small circle
B.great circle
C.rhumb line
D.hyperbola
A.untrue
B.impossible
C.suspectful
D.unimportant
最新試題
What describes a flood current（）.
Restricted areas at locks and dams are indicated by（）.
A celestial body will cross the prime vertical circle when the latitude is numerically （）.
How would you pass a red buoy in the maritime buoyage system“A” （）.
Which position includes the effects of wind and current（）.
When navigating a vessel，you（）.
When entering from seaward，a buoy displaying a single-flashing red light would indicate （）.
（） is a defined area within which ships must use particular caution and should follow the recommended direction of traffic flow.
On a chart，the characteristic of the light on a lighthouse is shown as flashing white with a red sector.The red sector（）.
What is an ebb current（）.