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
Gasoline tanks should be filled（）.
LFG tank and pipeline maintenance should include（）.
The weight of liquefied petroleum gas vapors as compared to air is（）.
Gasoline fumes tend to（）.
What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head?（）.
Name one major advantage of transporting gas under refrigeration.（）
Compared to the amount of concentrated foam liquid used，the amount of low expansion mechanical foam produced is（）.
The airborne concentrations of substances (such as H2S) under which nearly all workers may be repeatedly exposed without adverse effects are called（）.
The storage device for nitrogen-pressurized hydraulic fluid，which is used in closing the blowout preventers is called the（）.
If you have a liquefied flammable gas barge in tow，which is NOT required of you with respect to the barge and its cargo? （）