A.keeps sparks from falling into an open tank
B.secures covers on ullage openings
C.prevents sparks from getting out of an engine's exhaust system
D.grounds static electricity
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A.after the discharge valve
B.between the pump and discharge valve
C.after the suction valve
D.between the pump and suction valve
A.CCS marine surveyor
B.certified marine chemist
C.port engineer
D.MSA marine inspector
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
Gasoline vapor tends to collect（）.
Name one major advantage of transporting gas under refrigeration.（）
The amount of LFG that may be loaded into a given tank is determined by（）.
What would you consult to determine the number of persons required on duty while loading a cargo of leaded gasoline on your tanker? （）
The shut off valve at the gasoline tank which can be operated from outside the tank space （）.
When fueling has been completed（）.
Compared to the amount of concentrated foam liquid used，the amount of low expansion mechanical foam produced is（）.
Butadiene，inhibited，is labeled as a（）.
One of the principal dangers inherent in liquefied petroleum gas is（）.
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（）.