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單項(xiàng)選擇題

Vessels carrying（）must not willfully wash decks or holds.

A.general cargo
B.steel products
C.harmful cargo
D.machinery

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單項(xiàng)選擇題

Vessels must be（）valid certificate of nationality or certificated of registry or license.

A.acquiring
B.with possession of
C.required for
D.in possession of

單項(xiàng)選擇題

Vessels must not “exceed” a speed of 8 knots in this area.（）.

A.sail at
B.except
C.proceed at
D.steam over

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