A.CCS marine surveyor
B.certified marine chemist
C.port engineer
D.MSA marine inspector
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A.cooling the gas below the ignition point
B.cutting off the supply of oxygen
C.stopping the flow of gas
D.interrupting the chain reaction
A.odor
B.color
C.pressure
D.density
A.mimimum oxygen content line
B.critical displacement line
C.critical dilution line
D.upper threshold limit
最新試題
Each ship having an inert gas system must have a portable instruments to measure concentrations of hydrocarbon vapor in inert atmospheres and also to measure（）.
The primary hazard of liquefied petroleum gas and liquefied natural gas is（）.
The shut off valve at the gasoline tank which can be operated from outside the tank space （）.
Gasoline tanks should be filled（）.
When fueling has been completed（）.
Gasoline fumes tend to（）.
To determine the pressure and temperature limitations under which LFG is required to be transported on a barge，you should look at the（）.
Storage batteries should be charged in a well ventilated area because（）.
Combustible gas indicators operate by drawing an air sample into the instrument（）.
One of the principal dangers inherent in liquefied petroleum gas is（）.