单项选择题
A.Scrubber B.Demister C.Deck water seal D.Final filter
According to the regulations，to prevent excessive press...
单项选择题According to the regulations，to prevent excessive pressure buildup in cargo tanks containing LFG，they are fitted with（）.
A.pressure vacuum relief valves B.excess flow valves C.safety relief valves D.flame screens
According to the regulations，normally，manholes in LFG t...
单项选择题According to the regulations，normally，manholes in LFG tanks are located（）.
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
According to the Chemical Data Guide，when burning，the g...
单项选择题According to the Chemical Data Guide，when burning，the grade B flammable liquid，carbon disulfide produces（）.
A.phosgene gas B.sulfuric acid gas C.sulfur dioxide gas D.carbon tetrachloride
