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
One of the principal dangers inherent in liquefied petroleum gas is（）.
The airborne concentrations of substances (such as H2S) under which nearly all workers may be repeatedly exposed without adverse effects are called（）.
Name one major advantage of transporting gas under refrigeration.（）
Which is NOT a safety precaution to be observed during the loading of LFG?（）
LFG tank and pipeline maintenance should include（）.
The vapor pressure of a substance（）.
When fighting fires in spaces containing bottles of LPG (liquefied petroleum gas)，you should （）.
What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head?（）.
Gasoline tanks should be filled（）.
Each inert gas system must be designed to supply the cargo tanks with a gas，or mixture of gasses，that has an oxygen content by volume of（）.