In handling break bulk hazardous materials，it is forbidden to use（）.

Explosive and flammable gasses are most likely to be encountered on a vessel（）.

A.at any location
B.on the drill floor and liquid mud handling areas
C.in bulk storage tanks
D.in machinery spaces

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Antiseptics are used principally to（）.

A.speed healing
B.prevent infection
C.reduce inflammation
D.increase blood circulation

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