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单选题
It is quite()for an SES operator to send a distress alert.
A
easy and expensive
B
simple and certain
C
dangerous and stable
D
difficult and compulsory
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单选题If a GMDSS radio operator initiates a DSC distress transmission but does not insert a message,what happens? ()A
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LifeboatB
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It will initiate the DSC distress alert,but any station receiving it will have to establish contact with the distressed vessel to determine its identity,position and situation
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