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單項(xiàng)選擇題

The provisional pratique by radio （） a vessel to proceed directly to berths or working anchorages and begin normal business activities without the inspection of the Port Health Officer．

A.permit
B.permitting
C.is permitted
D.permits

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單項(xiàng)選擇題

The master of any vessel entering Singapore may （） radio pratique to the Port Health Officer through his local agent.

A.apply to
B.apply for
C.apply with
D.apply in

單項(xiàng)選擇題

The master got permission to pump out 500 tons of clean sea water for （）.

A.the purpose of trimming
B.the approval for ballast
C.the purpose of voyage
D.the approval for operation

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