單項(xiàng)選擇題When the power of SART is on, it will().

A.transmit distress signal
B.send response signal
C.transmit the signal of ship‟s position
D.be start by X-band radar


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2.單項(xiàng)選擇題The transmission of a()indicates that a ship is in distress and requires immediate assistance.

A.urgent traffic
B.distress alert
C.routine traffic
D.NAVTEX message

3.單項(xiàng)選擇題The GMDSS is composed of().

A.satellite and terrestrial communication systems
B.only navigational and alerting systems
C.just MSI system and locating system
D.SAR co-ordination system

4.單項(xiàng)選擇題MSI is broadcast via().

A.NAVTEX
B.EGC
C.HF-telex
D.all of above

5.單項(xiàng)選擇題The existing terrestrial radio system has a number of basic flaws which().

A.can be overcome by using traditional techniques
B.cannot be overcome by satellite system
C.can be overcome by satellite and digital techniques
D.cannot be tackled by any modern system