The immigrants spread unevenly across

1、To prevent the spread of fire by conve

To prevent the spread of fire by convection you should （）.Aremove combustibiles from direct exposureBcool the bulkhead around the fireCclose all openings to the areaDshut off electrical power

2、The union representative put across he

The union representative put across her argument very effectively.AexplainedBinventedCconsideredDaccepted

3、The pressure differential across a die

The pressure differential across a diesel engine lube oil system duplex filter should be checked to ________.Adetermine the need for filter cleaningBmeasure any change in oil viscosityCprevent damage to the filterDdetermine the need for batch filtration

4、The Immigration and Naturalization Ser

The Immigration and Naturalization Service is concerned with which document on a vessel making preliminary entry into a U.S. port from a foreign port?（）.ACargo ManifestBCertified Crew ListCCurio ListDShipping Article

5、Mariners proceeding across the main ro

Mariners proceeding across the main routes are（）to do so at as wide an angle as practicable.ArecommendedBreportedCappliedDcomplied

6、Fire dampers prevent the spread of fir

Fire dampers prevent the spread of fire by（）.AconvectionBconductionCradiationDdirect contact