A.5% or less
B.10% or less
C.15% or less
D.20% or less
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A.97 times greater
B.94 times greater
C.10 times greater
D.2 times greater
A.over an electrically heated platinum filament
B.where it is mixed with nitrogen
C.where it is ignited by a sparking device
D.where its specific gravity is measured
A.combustible liquid
B.flammable gas
C.flammable liquid
D.flammable solid
A.the gasoline tank is full
B.the bilges，cabins，etc. are thoroughly ventilated
C.you have fresh water on board
D.Each of the above is followed
A.with
B.by
C.of
D.for
最新試題
The vapor pressure of a gas is the pressure necessary to keep it in a(n)（）.
Combustible gas indicators operate by drawing an air sample into the instrument（）.
Where is thicker plating usually found in the construction of integral tanks on a ship? （）
Gasoline tanks should be filled（）.
Storage batteries should be charged in a well ventilated area because（）.
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 amount of LFG that may be loaded into a given tank is determined by（）.
What normally helps in detecting escaping gas? （）
The primary hazard of liquefied petroleum gas and liquefied natural gas is（）.
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（）.