A.phosgene gas
B.sulfuric acid gas
C.sulfur dioxide gas
D.carbon tetrachloride
您可能感興趣的試卷
你可能感興趣的試題
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
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
最新試題
Where should the tops of vents from gasoline tanks terminate?（）.
What is used to test a tank for oxygen content?（）
The vapor pressure of a substance（）.
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? （）
Gasoline vapor tends to collect（）.
Where is thicker plating usually found in the construction of integral tanks on a ship? （）
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.
The airborne concentrations of substances (such as H2S) under which nearly all workers may be repeatedly exposed without adverse effects are called（）.
Compared to the amount of concentrated foam liquid used，the amount of low expansion mechanical foam produced is（）.