A.trichloromethane
B.sulfuric chlorohydrin
C.chlorine gas
D.4-methyl phenol
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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
A.B flammable liquid
B.C flammable liquid
C.D combustible liquid
D.E combustible liquid
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
A.A load on top system
B.Direct line system
C.Circle line system
D.An inert gas system
A.Evaporation
B.Dispersion
C.Emulsification
D.Drifting
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Inerting means（）.
In setting the valves on a steam-smothering system on a tank vessel，the master control valve to cargo tanks should be（）.
Regulations require that pumprooms on tank vessels carrying grade C liquid cargo with machinery spaces below the freeboard deck be ventilated with（）.
Spreading oil on the open sea has the effect of（）.
Unless such oil tanker carries crude oil which is not suitable for crude oil washing，the oil tanker shall（）the system in accordance with the requirements of that Regulation.
The purpose of inert gas systems aboard tankers is to（）.
If a leak occurred while loading diethylenetriamine，the chemical data guide indicates you would smell an odor similar to（）.
The designations A，B，C，D and E grades of cargo refer to the（）.
Regulations require that cargo pumprooms on tank barges (constructed in 1965) carrying grades B or C liquid cargoes have power ventilation systems which can completely change the air in （）.
The component in an inert gas system used for cleaning the gas of solid and sulphur combustion products，while simultaneously cooling the inert gas，is called the（）.