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 vapor pressure of a substance（）.
What normally helps in detecting escaping gas? （）
Storage batteries should be charged in a well ventilated area because（）.
Combustible gas indicators operate by drawing an air sample into the instrument（）.
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.
Which is NOT a safety precaution to be observed during the loading of LFG?（）
Gasoline vapor tends to collect（）.
Name one major advantage of transporting gas under refrigeration.（）
Compared to the amount of concentrated foam liquid used，the amount of low expansion mechanical foam produced is（）.
LFG tank and pipeline maintenance should include（）.