A rotary current sets through all directions of the compass. The time it takes to complete one of these cycles is approximately().
A、A.3 hours
B、B.6 1/2 hours
C、C.12 1/2 hours
D、D.25 hours
A、A.3 hours
B、B.6 1/2 hours
C、C.12 1/2 hours
D、D.25 hours
A、current setting your vessel on the wall B、current setting into the lock chamber C、an eddy working along the lower guide wall D、current setting counterclockwise
A、current setting your vessel on the wall B、current setting into the lock chamber C、an eddy working along the lower guide wall D、current setting counterclockwise
A、a current setting your vessel on the wall B、a current setting into the lock chamber C、an eddy working along the lower guide wall D、a current setting counterclockwise
A、velocity of current in knots B、direction from which the current folws C、estima ed current D、direction toward which the current flows
A、A.velocity of current in knots B、B.direction from which the current flows C、C.estimated current D、D.direction toward which the current flows