单项选择题
A precaution you should take before bunkering is to （） .
A.plug the vents
B.plug the sounding pipes
C.plug the scuppers
D.close the lids on the vents
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相关考题
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单项选择题
A position that is obtained by using two or more intersecting lines of position taken at nearly the same time，is a(n) （）.
A.fix
B.running fix
C.estimated position
D.dead-reckoning position -
单项选择题
A position that is obtained by applying estimated current and wind to your vessel’s course and speed is a(n) （）.
A.estimated position
B.dead reckoning position
C.fix
D.None of the above -
单项选择题
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
