單項選擇題Access to a cargo pumproom on a tank vessel carrying grades A，B，C or D liquid cargoes shall be（）.

A.at least 13.1 feet away from the galleys，living quarters or navigation spaces
B.from the open deck
C.only from areas equipped with power ventilation systems
D.isolated from any part of the vessel which normally contains sources of vapor ignition


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1.單項選擇題A synonym for chloroform is（）.

A.trichloromethane
B.sulfuric chlorohydrin
C.chlorine gas
D.4-methyl phenol

2.單項選擇題A safe fuel system must（）.

A.prevent engine overheating
B.have proper air/gasoline fuel mixture ratio
C.be liquid- and vapor-tight
D.supply sufficient air to the intake manifold

3.單項選擇題A petroleum liquid has a flash point of 135°Fahrenheit. This liquid is classed as a grade （）.

A.B flammable liquid
B.C flammable liquid
C.D combustible liquid
D.E combustible liquid

4.單項選擇題A flame screen（）.

A.permits the passage of vapor but not of flame
B.prevents the passage of flammable vapors
C.prevents inert gas from leaving a tank
D.permits vapors to exit but not enter a tank

5.單項選擇題（）shall be provided in every cargo tank and slop tank in accordance with the appropriate Resolutions.

A.A load on top system
B.Direct line system
C.Circle line system
D.An inert gas system