單項選擇題

The closest point of approach (CPA) of a contact on a relative motion radar may be determined（）.

A.immediately when the contact is noted on radar
B.only if the radar scope is watched constantly
C.after the contact has been marked at least twice
D.by an occasional glance at the radar

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單項選擇題

The articulated light is superior to other types of buoys because（）.

A.the radar reflectors reflect better signals
B.fog horn signals travel farther to sea
C.it is equipped with strobe lights
D.it has a reduced watch circle

單項選擇題

The ARPA may swap targets when automatically tracking if two targets（）.

A.are tracked on reciprocal bearings
B.are tracked at the same range
C.are tracked on the same bearing
D.pass close together

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The closest point of approach (CPA) of a contact on a relative motion radar may be determined（）.

你可能感興趣的試題

The articulated light is superior to other types of buoys because（）.

The ARPA may swap targets when automatically tracking if two targets（）.