单项选择题

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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单项选择题

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

单项选择题

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

单项选择题

A.CCS
B.the National Cargo Bureau
C.MSA
D.PRC Customs