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Which statement about the gyrocompass is FALSE ________.A.Its accuracy remains the same at

Which statement about the gyrocompass is FALSE ________.

A.Its accuracy remains the same at all latitudes

B.It seeks the true meridian

C.It can be used near the Earth's magnetic poles

D.If an error exists,it is the same on all headings

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第1题

Which statement about the Flinders bar of the magnetic compass is CORRECT ________.

A.It compensates for the error caused by the vertical component of the Earth's magnetic field

B.It compensates for error caused by the heeling of a vessel

C.It compensates for quadrantal deviation

D.It is only needed in equatorial waters

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第2题

You have another ship overtaking you close aboard to starboard.You have 3 radar targets bearing 090° relative at ranges of 0.5 mile,1 mile,and 1.5 miles.In this case,the unwanted echoes are called ______.

A.Multiple echoes

B.Spoking

C.Indirect echoes

D.Side-lobe echoes

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第3题

______ is not used in modern radar.

A.EBL

B.VRM

C.CRT

D.Grease pencil

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第4题

Your ARPA has automatic speed inputs from the log.Due to currents,the log is indicating a faster speed than the speed over the ground.What should you expect under these circumstances ________.

A.The generated CPA will be less than the actual CPA

B.The generated TCPA will be later than the actual TCPA

C.The range of initial target acquisition will be less than normal

D.The targets true course vector will be in error

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