单项选择题
Which statement concerning GMDSS Radio Operator requirements is FALSE（）.
A.Each compulsory vessel must carry at least two licensed GMDSS Radio Operators at all times while at sea
B.Each compulsory vessel must carry at least two licensed Radio Operators at all times while at sea and may elect to carry a GMDSS Radio Maintainer as well
C.Communications involving safety of life at sea do not have to be logged as long as the compulsory vessel was not involved in such communications
D.While at sea，adjustments to，and the maintaining of，GMDSS equipment may be performed by the GMDSS Radio operator as long as the work is supervised by an onboard licensed GMDSS Radio Maintainer
相关考题
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单项选择题
Which message categories cannot be disabled by the GMDSS radio operator（）.
A.Navigational Warnings
B.Meteorological Warnings
C.Search and Rescue Information
D.All of the above -
单项选择题
Which maintenance functions can a GMDSS Radio Operator perform（）.
A.The Operator can make fine internal adjustments to the transmitter as long as the output power does not change by more than one percent
B.The Operator is responsible for ensuring that INMARSAT antennas are free of built-up soot and clear of obstacles
C.All levels of maintenance must be performed by a licensed GMDSS Radio Maintainer
D.The Operator may install an EPROM in order to ensure that the equipment continues to operate within legal constraints -
单项选择题
Which device provides the main means in the GMDSS for locating ships in distress or their survival craft（）.
A.Radio direction finder
B.Satellite EPIRBs
C.MF/HF DSC
D.VHF homing device
