A.Scrubber
B.Demister
C.Deck water seal
D.Final filter
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A.pressure vacuum relief valves
B.excess flow valves
C.safety relief valves
D.flame screens
A.in the ends of each tank
B.in the expansion trunk of each tank
C.above the weather deck
D.there are no requirements in the regulation
A.phosgene gas
B.sulfuric acid gas
C.sulfur dioxide gas
D.carbon tetrachloride
A.5 times the maximum working pressure on the hose during cargo transfer
B.one half the designed working pressure
C.4 times the pressure of the cargo pump used for transferring
D.5 times the minimum working pressure on the hose during cargo transfer
A.keel
B.center of buoyancy
C.tipping center
D.amidships section
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Butadiene，inhibited，is labeled as a（）.
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 storage device for nitrogen-pressurized hydraulic fluid，which is used in closing the blowout preventers is called the（）.
Where is thicker plating usually found in the construction of integral tanks on a ship? （）
Storage batteries should be charged in a well ventilated area because（）.
One of the principal dangers inherent in liquefied petroleum gas is（）.
Name one major advantage of transporting gas under refrigeration.（）
Each ship having an inert gas system must have a portable instruments to measure concentrations of hydrocarbon vapor in inert atmospheres and also to measure（）.
Upon release to the atmosphere，LFG readily（）.
Compared to the amount of concentrated foam liquid used，the amount of low expansion mechanical foam produced is（）.