单选题You should plot your dead reckoning position（）.AFrom every fix or running fixBFrom every estimated positionCEvery three minutes in pilotage watersDOnly in pilotage waters
单选题
You should plot your dead reckoning position（）.
A
From every fix or running fix
B
From every estimated position
C
Every three minutes in pilotage waters
D
Only in pilotage waters
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