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單項選擇題

Vessels must （） pilot at waiting anchorage．

A.wait
B.wait for
C.be waited
D.be waited for

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單項選擇題

There shall be two principal （） through the harbor for the passage of vessels of over 60 tons burden．

A.straits
B.channels
C.canals
D.roadsteads

單項選擇題

The transfer procedures for oil products are required to be posted （）.

A.in the pilothouse
B.in the officer's lounge
C.in the upper pumproom flat
D.where they can be easily seen or readily available

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