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單項(xiàng)選擇題

Vessels wishing to communicate with the Port Health Officer should do（）on VHF Channel 14.

A.so
B.that
C.this
D.same

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單項(xiàng)選擇題

There is a VHF set（）the front of the wheelhouse.

A.at
B.on
C.of
D.in

單項(xiàng)選擇題

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

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