A.operates on both military and civilian aircraft distress frequencies
B.transmits both an alerting signal and a homing signal
C.must be the float free type and automatically activated
D.operates with a greater output of signal power
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A.for precise navigation in coastal waters
B.by measuring the phase difference of the dots and dashes
C.as an aid to ocean navigation
D.if the vessel is fitted with a special Consol receiver
A.that follows the curvature of the earth
B.that can be picked up by SARSAT satellite
C.that activates an alarm on board nearby aircraft
D.to alert shore stations and then transmits a homing signal
A.permanently mounted in the survival craft
B.portable and stowed for carriage to the survival craft
C.permanently mounted on the bridge wings
D.portable and stowed in the emergency gear locker
A.understanding the GMDSS console's normal operational indicators
B.maintaining a proper GMDSS radio station log
C.responding to and comprehending alarms
D.All of the above
A.monitoring all required frequencies in the proper mode
B.reading all displays and/or printouts after silencing an alarm
C.notifying the Master of any distress alerts
D.All of the above
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Monitoring is especially important in a highly automated system which is dependent on careful（）procedure and format.
SafetyNet is an international service for the broadcast and automatic reception of MSI by means of direct-printing through（）system.
The priority of EGC messages is classified by（）.
The advantage of geostationary satellites is（）.
（）by an ice-breaker, it is important to maintain a continuous listening watch on the appropriate VHF channel and to maintain a proper look-out for sound and visual signals.
All coast radio stations（）DSC installed for VHF and HF.
（）will form the basis for distress alerting and safety calling.
Stations in the United States of America are grouped by states arranged in the alphabetical order of their（）.
Every ship constructed on or after（）shall comply with all the applicable requirements of this chapter.
Distress traffic is the communication（）between the station in distress and the ships, aircraft, coast radio stations, coast earth stations and rescue centers participating in the rescue work.