A.pressure vacuum relief valves
B.excess flow valves
C.safety relief valves
D.flame screens
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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
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
最新試題
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? （）
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（）.
What normally helps in detecting escaping gas? （）
What is the proper first aid for LPG in the eye? （）
What will NOT increase friction of a liquid flowing in a pipe and cause a loss of suction head?（）.
It should be noted（）the use of synthetic mooring ropes able to produce sparks by their manipulation is absolutely forbidden on board petroleum tankers and LPG or LNG carriers，or any vessels carrying inflammable substances.
Gasoline fumes tend to（）.
Before starting a gasoline engine on a motorboat，you should make sure for safety that（）.
Storage batteries should be charged in a well ventilated area because（）.