In particular,which is not included in the Navigation System?()
A、ECDIS
B、RADAR
C、GPS
D、GMDSS
A、ECDIS
B、RADAR
C、GPS
D、GMDSS
A、speed of the current at a particular time B、maximum speed of the current C、direction from which the current flows D、direction in which the current flows
A、A.speed of the current at a particular time B、B.maximum speed of the current C、C.direction from which the current flows D、D.direction in which the current flows
A、The LAST_SCN value in the first row is NULL, which means that the versions of the row still exist at SCN 6636300. B、The LAST_SCN value in the second row in NULL, which means that the version of the row still exists at SCN 6636300. C、The LAST_SCN value in the third row is 6636280, which means that the version of row exists above SCN 6636280. D、The LAST_SCN value in the second row is NULL, which means that the version of the row no longer exists because it was deleted.
A、The LAST_SCN value in the first row is NULL, which means that the versions of the row still exist at SCN 6636300. LAST_SCN B、The LAST_SCN value in the second row in NULL, which means that the version of the row still exists at SCN 6636300. C、The LAST_SCN value in the third row is 6636280, which means that the version of row exists above SCN 6636280. D、The LAST_SCN value in the second row is NULL, which means that the version of the row no longer exists because it was deleted. LAST_SCN