A.Replace the batteries
B.Check the sampling tube for blockage
C.Adjust the final reading by the amount the needle is displaced from zero
D.Replace the platinum filament
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A.either
B.the master
C.the Shipowner
D.neither
A.on
B.in
C.at
D.with
A.despatched
B.detained
C.detected
D.delivered
A.under deck
B.on deck
C.ondeck only
D.under deck only
A.combustible liquid
B.flammable liquid
C.flammable solid
D.poison B
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The nozzle of a gasoline hose or can should be kept（）.
I am（）fire and have dangerous cargo on board.
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