A.variable
B.the same
C.lighter
D.heavier
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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
A.controls the amount of gasoline to the engine
B.shuts off the gasoline supply at the tank
C.is used if the gasoline tank leaks
D.All of the above
最新試題
The vapor pressure of a gas is the pressure necessary to keep it in a(n)（）.
The weight of liquefied petroleum gas vapors as compared to air is（）.
Where is thicker plating usually found in the construction of integral tanks on a ship? （）
Where should the tops of vents from gasoline tanks terminate?（）.
Storage batteries should be charged in a well ventilated area because（）.
The shut off valve at the gasoline tank which can be operated from outside the tank space （）.
Name one major advantage of transporting gas under refrigeration.（）
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（）.
The tops of vents from gasoline tanks should terminate（）.
Gasoline fumes tend to（）.