A.that
B.which
C.who
D.these
您可能感興趣的試卷
你可能感興趣的試題
A.Make periodic inspections of bilges
B.Keep the barge under constant surveillance
C.Have a properly certificated tankerman or at least one licensed officer on board the towing vessel
D.Verify ullage readings
A.above the floor plates of the bilges
B.above the carburetor level
C.at the lowest point of the bilge areas
D.at no particular level
A.to the top to expel all vapors from the tanks
B.to the top so the operator is certain how much fuel he has aboard
C.with only sufficient fuel for the planned trip so excess gasoline is not carried
D.to near the top with some space allowed for gasoline expansion
A.settle near the bottom of the bilge
B.settle near the top of the bilge
C.settle evenly throughout all levels of the bilge by mixing with air
D.disperse to atmosphere
A.nitrogen
B.oxygen
C.carbon dioxide
D.water vapor
最新試題
Combustible gas indicators operate by drawing an air sample into the instrument().
The amount of LFG that may be loaded into a given tank is determined by().
What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head?().
Which is NOT a safety precaution to be observed during the loading of LFG?()
The primary hazard of liquefied petroleum gas and liquefied natural gas is().
What is the proper first aid for LPG in the eye? ()
What is used to test a tank for oxygen content?()
Where should the tops of vents from gasoline tanks terminate?().
Butadiene,inhibited,is labeled as a().
Storage batteries should be charged in a well ventilated area because().