单项选择题
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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A.additional
B.permanent
C.temporary
D.long -
单项选择题
The cylinder oil will have to neutralize the acidic products of combustion and have good （） properties to keep the metal surfaces clean.
A.detergent
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D.demulsifying -
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As for turbine oil, contact with water in the form of steam will be inevitable so good （） properties will be essential.
A.defrosting
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