A position obtained by crossing lines of position taken at different times and advanced to a common time is a(n) ().
A、dead-reckoning position
B、running fix
C、estimated position
D、fix
A、dead-reckoning position
B、running fix
C、estimated position
D、fix
A、A.dead-reckoning position B、B.fix B.estimated position C、C.probable position D、D.running fix