A.Bends in the piping
B.Slowing the pumping rate
C.Pipeline valves
D.Backing rings for pipe welds
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A.Running hand along pipe
B.Red flame
C.Odor
D.Increase the line pressure
A.Combustible gas indicator
B.Vapor indicator
C.Atmosphere analyzer kit
D.None of the above
A.Apply an ice pack to the eye
B.Keep the eyelid closed
C.Flush the eye with plenty of water
D.Rub the eye area clean
A.vaporizes
B.attacks caustically
C.rises
D.attacks corrosively
A.Certificate of Inspection
B.loading order
C.rules and regulations for tankers
D.tankerman's document
最新試題
The tops of vents from gasoline tanks should terminate（）.
What normally helps in detecting escaping gas? （）
The weight of liquefied petroleum gas vapors as compared to air is（）.
It should be noted（）the use of synthetic mooring ropes able to produce sparks by their manipulation is absolutely forbidden on board petroleum tankers and LPG or LNG carriers，or any vessels carrying inflammable substances.
Before starting a gasoline engine on a motorboat，you should make sure for safety that（）.
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.（）
What is the proper first aid for LPG in the eye? （）
One of the principal dangers inherent in liquefied petroleum gas is（）.
The vapor pressure of a substance（）.