航海英语液化气体与IGC规则章节练习(2017.12.18)

单项选择题
A vessel behaves as if all of its weight is acting downward through the center of gravity，and all its support is acting upward through the（）.
A.keel
B.center of buoyancy
C.tipping center
D.amidships section
单项选择题
The storage device for nitrogen-pressurized hydraulic fluid，which is used in closing the blowout preventers is called the（）.
A.actuator
B.annulus
C.accumulator
D.annular preventer
单项选择题
What would you consult to determine the number of persons required on duty while loading a cargo of leaded gasoline on your tanker? （）
A.the Matitime Code of China
B.Certificate of Inspection
C.Oil Transfer Procedures Manual
D.IOPP Certificate
单项选择题
Combustible gas indicators operate by drawing an air sample into the instrument（）.
A.over an electrically heated platinum filament
B.where it is mixed with nitrogen
C.where it is ignited by a sparking device
D.where its specific gravity is measured
单项选择题
What normally helps in detecting escaping gas? （）
A.Running hand along pipe
B.Red flame
C.Odor
D.Increase the line pressure
单项选择题
The vapor pressure of a substance（）.
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
单项选择题
Where should the tops of vents from gasoline tanks terminate?（）.
A.In open air
B.Inside cabins near the overhead
C.In the machinery space near the engine air intake
D.Underwater
单项选择题
A chemical additive to LPG gives it a characteristic（）.
A.odor
B.color
C.pressure
D.density
单项选择题
The vapor pressure of a gas is the pressure necessary to keep it in a(n)（）.
A.soluble state
B.solid state
C.liquefied state
D.inert state
单项选择题
What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head?（）.
A.Bends in the piping
B.Slowing the pumping rate
C.Pipeline valves
D.Backing rings for pipe welds