單項選擇題
A.Bends in the piping B.Slowing the pumping rate C.Pipeline valves D.Backing rings for pipe welds
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
A.variable B.the same C.lighter D.heavier
A.decreases as temperature increases B.increases with the temperature C.is not affected by temperature D.may increase or decrease as the temperature rises
A.soluble state B.solid state C.liquefied state D.inert state
A.in open air B.inside cabins C.in machinery space D.underwater
A.actuator B.annulus C.accumulator D.annular preventer
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