A.keel
B.center of buoyancy
C.tipping center
D.amidships section
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A.keeps sparks from falling into an open tank
B.secures covers on ullage openings
C.prevents sparks from getting out of an engine's exhaust system
D.grounds static electricity
A.after the discharge valve
B.between the pump and discharge valve
C.after the suction valve
D.between the pump and suction valve
A.CCS marine surveyor
B.certified marine chemist
C.port engineer
D.MSA marine inspector
A.cooling the gas below the ignition point
B.cutting off the supply of oxygen
C.stopping the flow of gas
D.interrupting the chain reaction
A.odor
B.color
C.pressure
D.density
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Gasoline tanks should be filled（）.
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（）.
Where should the tops of vents from gasoline tanks terminate?（）.
One of the principal dangers inherent in liquefied petroleum gas is（）.
The vapor pressure of a gas is the pressure necessary to keep it in a(n)（）.
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 primary hazard of liquefied petroleum gas and liquefied natural gas is（）.
Storage batteries should be charged in a well ventilated area because（）.
Butadiene，inhibited，is labeled as a（）.