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
Butadiene，inhibited，is labeled as a（）.
Name one major advantage of transporting gas under refrigeration.（）
Where is thicker plating usually found in the construction of integral tanks on a ship? （）
The primary hazard of liquefied petroleum gas and liquefied natural gas is（）.
The amount of LFG that may be loaded into a given tank is determined by（）.
What normally helps in detecting escaping gas? （）
Before starting a gasoline engine on a motorboat，you should make sure for safety that（）.
The airborne concentrations of substances (such as H2S) under which nearly all workers may be repeatedly exposed without adverse effects are called（）.
Which is NOT a safety precaution to be observed during the loading of LFG?（）
Storage batteries should be charged in a well ventilated area because（）.