Satellite
Microwave
Light wave
Radio Frequency
第1题:
A.Radio Wave
B.Radio Flag
C.Raddio Fdrequency
D.Red Frequency
第2题:
Bluetooth is a ()technology.
第3题:
射频识别技术的英文全称是Radio Frequency Identification缩写()
第4题:
a distinctive signal
the Morse Code signal for SOS
a computerized voice announcement of Mayday
your vessel's International Radio Call Sign
第5题:
No action is necessary,as the DSC control unit will automatically switch to the NBDP follow-on communications frequency
The operator should immediately set continuous watch on the radiotelephone frequency that is associated with the frequency band on which the distress alert was received
The Operator should immediately set continuous watch on VHF channel 70
The Operator should immediately set continuous watch on the NBDP frequency that is associated with the frequency band on which the distress alert was received
第6题:
Satellite
Microwave
Light wave
Radio Frequency
第7题:
After determining that the frequency or channel appears to be no longer in use
After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications
After the Rescue Coordination Center transmits a message on the frequency or channel being used for emergency communications stating that such traffic has concluded
Routine communications can resume if,in the Master's opinion,communications on that frequency or channel will not interfere with emergency communications
第8题:
Access point received-signal strength level
Spectrum utilization
Client data rate
In-band radio frequency interference
第9题:
persistence
pulse repetition rate
pulse length
resolution
第10题:
flashes at regular intervals at a frequency of 120 flashes or more per minute
is yellow in color
is visible over an arc of the horizon of not less than 180°nor more than 225°
All of the above
第11题:
Steering gear and windlass
Navigation light and radio power panel
Navigation device power box
Daily fresh water pump
第12题:
After determining that the frequency or channel appears to be no longer in use
After determining that geographic distance from the distress situation will prohibit any other signal from interfering with emergency communications
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 concluded
If,in the Master's opinion,communications on that frequency will interfere with emergency communications
第13题:
If you know that the vessel you are about to call on the VHF radio maintains a radio watch on both the working and the calling frequencies, which frequency should you call on ?______.
A.Calling frequency
B.Distress frequency
C.Urgency frequency
D.Working frequency
第14题:
射频识别(Radio Frequency Identification,RFID)技术的基本原理是磁波理论。
第15题:
Which of the following communication methods will provide the maximum bandwidth for video streaming through a media extender?()
第16题:
Calling frequency
Distress frequency
Urgency frequency
Working frequency
第17题:
对
错
第18题:
第19题:
Admiralty Chart
Admiralty Light list
Admiralty List of Radio Signals
Admiralty Notices to Mariners
第20题:
a commercial ship-to-ship channel
the last frequency that was used
the distress and calling frequency
the radio only if expecting a call
第21题:
is 14 feet above sea level
has a fixed green light
is shown from a white square tower
is synchronized with a radio beacon
第22题:
has been
have been
have
has
第23题:
To ensure that interference to proprietary communications is minimized
To ensure that only voice communications can be effected on the distress frequency or channel
To ensure that a distressed vessel will have a window twice each hour for transmitting routine messages
To ensure that interference on a particular frequency or channel to communications concerning emergency traffic is minimized
第24题:
By the On Scene Coordinator (OSC)
By the Coast Earth Station (CES) controlling the distress communications on that frequency
It is imposed by the Public Correspondence Station (PCS) controlling the distress communications on that frequency or channel
It is imposed by the High Seas Service (HSS) controlling the distress communications on that frequency or channel