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单选题
The Class A EPIRB transmits a signal（）.
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
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考题
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考题
单选题When testing a Class A EPIRB you will know the EPIRB is working properly if you hear on 99.5 Mhz FM or any vacant frequency on a nearby AM radio（）.A
a distinctive signalB
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考题
单选题When can routine communications be resumed on a frequency or channel on which radio silence has been imposed? （）A
After determining that the frequency or channel appears to be no longer in useB
After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communicationsC
After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concludedD
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考题
单选题When can routine communications be resumed when radio silence has been imposed?（）A
After determining that the frequency or channel appears to be no longer in useB
After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communicationsC
Routine communications can resume after the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concludedD
If，in the Master's opinion，communications on that frequency will interfere with emergency communications
考题
单选题What does a SART signal sound or look like?（）A
It transmits SOS and the vessel's name and position in slow speed Morse CodeB
It will appear on a radar unit's PPI as a line of dots radiating outward with the innermost dot indicating the SART's positionC
It will appear on a radar unit's PPI as a line of dots radiating outward with the outermost dot indicating the SART's positionD
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考题
单选题After a vessel transmits the original distress message，what signal should be sent to allow ships to take RDF bearings?（）A
SOS three timesB
Additional transmissions to aid direction findingC
E for one minute，followed by T for one minuteD
Two tones，10-15 seconds each
考题
单选题The difference between a class A and a class B EPIRB is that the class A EPIRB（）.A
operates on both military and civilian aircraft distress frequenciesB
transmits both an alerting signal and a homing signalC
must be the float free type and automatically activatedD
operates with a greater output of signal power
考题
单选题All self-propelled vessels on an international voyage must be equipped with how many Emergency Position Indicating Radio beacons (EPIRB)? （）A
One approved Category 1 EPIRBB
Three approved Category 1 EPIRBsC
One approved Class B EPIRBD
Two approved Class B EPIRBs
考题
单选题All self-propelled vessels on an international voyage must be equipped with how many Emergency Position Indicating Radiobeacons (EPIRB)（）?A
One approved Class A EPIRBB
Two approved Class A EPIRBsC
One approved Class B EPIRBsD
Two approved Class B EPIRBs
考题
单选题（）process the distress signal from EPIRB to determine its position and identity.A
COSPAS-SARSATB
ground receiving stationsC
storing distress signalD
Near polar orbiting satellites
考题
单选题For COAPAS-SARSAT system,（）process the distress signal from EPIRB to determine its position and identity.A
COSPAS-SARSATB
ground receiving stationsC
spacecraftD
satellite SAR instrument
考题
单选题Which EPIRB transmits a distress alert that is received and relayed by an INMARSAT satellite?（）A
Class A EPIRBsB
Class B EPIRBsC
L-Band EPIRBsD
Category I EPIRBs
考题
单选题A Class A EPIRB is NOT（）.A
approved by the CCSB
designed for float free，automatic activationC
operated on 121.5/243 MHzD
operated manually
考题
单选题Each Class A EPIRB shall be stowed in a manner which will permit（）.A
easy access to its storage compartmentB
replacement of the battery without exposure to the weatherC
it to float free if the vessel sinksD
it to remain attached to the vessel
考题
单选题A Class C EPIRB（）.A
is primarily designed for vessels operating up to 50 miles offshore or on foreign watersB
transmits a signal that can be detected by satelliteC
must be manually activatedD
operates in the medium and low frequency bands
考题
单选题VHFDSC报警呼叫中遇险性质EPIRB emission是指（）。A
信息是由甚高频EPIRB发射的B
该信息是发射给甚高频EPIRB的C
甚高频EPIRB发生信号泄露D
该信息发送是由卫星EPIRB发射的
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