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
LFG tank and pipeline maintenance should include（）.
The primary hazard of liquefied petroleum gas and liquefied natural gas is（）.
Gasoline vapor tends to collect（）.
Gasoline fumes tend to（）.
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（）.
Combustible gas indicators operate by drawing an air sample into the instrument（）.
What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head?（）.
The storage device for nitrogen-pressurized hydraulic fluid，which is used in closing the blowout preventers is called the（）.
The amount of LFG that may be loaded into a given tank is determined by（）.
When fighting fires in spaces containing bottles of LPG (liquefied petroleum gas)，you should （）.