Reliable delivery of messages is ensured by()techniques.
A、forward error correction
B、aftward error correction
C、DGPS
D、error-free and low error reception
A、forward error correction
B、aftward error correction
C、DGPS
D、error-free and low error reception
A、information of the of the vessel B、Notice of Readiness C、Declaration of the Condition of the Vessel D、Declaration of DWT or Net DWT
A、the date of declaration B、date of Notice of Readiness C、the canceling date D、the date of delivery