How long must the GMDSS radio log be retained on board().
A、At least two years after the last entry
B、At least one year after the last entry
C、At least 90 days after the last entry
D、At least 30 days after the last entry
A、At least two years after the last entry
B、At least one year after the last entry
C、At least 90 days after the last entry
D、At least 30 days after the last entry
A、How ofen do the course? B、How about the flavour of this course? C、How long does it preparefor dinner? D、How long does it take to cook this course?
A、At least two years after the last entry B、At least one year after the last entry C、At least 90 days after the last entry D、At least 30 days after the last entry
A、It is the size of the RSVP hello packet B、It is how long it maintains RSVP neighbors C、It is the length of time between RSVP hello packets D、It is how long the router waits before declaring a router to be down