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單項選擇題

Enhanced procedures concerning the exercise of （） have been developed to allow intervention in the ease of deficiencies deemed to pose a danger to persons, property or the environment.

A.port state control
B.flag state control
C.fire and boat drill
D.Safety inspection

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單項選擇題

It is often necessary to put an engine into （） service with one or more cylinders cut out, or with a turbocharger secured.

A.additional
B.permanent
C.temporary
D.long

單項選擇題

The cylinder oil will have to neutralize the acidic products of combustion and have good （） properties to keep the metal surfaces clean.

A.detergent
B.de-oiling
C.defrosting
D.demulsifying

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