单项选择题
A.Vessel's Hoisting Flag B.Very High Safety C.Vessel's Homing Frequency D.Very High Frequency
Vessels wishing to communicate with the Port Health Off...
单项选择题Vessels wishing to communicate with the Port Health Officer should do（）on VHF Channel 14.
A.so B.that C.this D.same
There is a VHF set（）the front of the wheelhouse.A.atB.o...
单项选择题There is a VHF set（）the front of the wheelhouse.
A.at B.on C.of D.in
There is a drifting mine（）in position 21 degrees 31 min...
单项选择题There is a drifting mine（）in position 21 degrees 31 minutes North 124 degrees 20 minutes East.
A.report B.reports C.reported D.reporting
