A.97 times greater
B.94 times greater
C.10 times greater
D.2 times greater
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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
A.Scrubber
B.Demister
C.Deck water seal
D.Final filter
最新試題
What is the proper first aid for LPG in the eye? （）
The primary hazard of liquefied petroleum gas and liquefied natural gas is（）.
The airborne concentrations of substances (such as H2S) under which nearly all workers may be repeatedly exposed without adverse effects are called（）.
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（）.
The vapor pressure of a substance（）.
Gasoline fumes tend to（）.
What is used to test a tank for oxygen content?（）
The weight of liquefied petroleum gas vapors as compared to air is（）.
What normally helps in detecting escaping gas? （）
The tops of vents from gasoline tanks should terminate（）.