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单选题
When may the automatic identification system (AIS) be switched off? （）
A
At anytime as long as it is properly logged
B
At the Master's professional judgment
C
Only when the vessel is at anchor or in port
D
Under no circumstance
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With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds ________．A.Call sign and IMO numberB.Course over ground and MMSIC.MMSI number and call signD.Route Plan and navigational status
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单选题A passenger vessel is required to have a supervised patrol when（）.A
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单选题Which of the following statements is TRUE regarding automatic identification systems (AIS) ?（）A
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单选题With respect to automatic identification systems（AIS），which information is expected to be broadcast every 1 to 10 seconds（）.A
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单选题With respect to automatic identification systems（AIS），which information is required to be broadcast every 1 to 10 seconds（）.A
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考题
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单选题Which of the following statements is TRUE regarding automatic identification systems (AIS) ? （）A
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单选题Which of the following statements is TRUE regarding automatic identification systems (AIS)? （）A
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Set a threshold for the default system-defined moving window baseline.B
Add directives to the Automatic Database Diagnostic Monitor (ADDM).C
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Implement the database resource manager to add the SWITCH_IO_REQS and SWITCH_GROUP directives.
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单选题如何强制执行日志切换（）A
ALTER SYSTEM CHECKPOINT;B
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ALTER SYSTEM SWITCH LOGFILE;D
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ALTER DATABASE LOG SWITCH;
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单选题Automatic identification systems (AIS) are expected to broadcast all of the following information EXCEPT（）.A
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