Question

a worker can be exposed to hazardous materials by inhalation, ingestion, and a. osmosis b. absorption c. radiation d. proximity
hypothermia is a condition brought on by a. excessive alcohol consumption b. prolonged exposure to cold c. excessive sweating d. prolonged exposure to heat
when in storage, oxygen and fuel cylinders used in oxyfuel cutting must be separated by a. 20 feet (6.1 m) b. a metal barrier c. a 20 - foot (6.1 m) wall d. 10 feet (3.4 m)
grease and oil must be kept away from oxygen tanks because a. grease or oil will contaminate the oxygen b. oxygen causes oil to freeze c. grease or oil can cause oxygen to explode

Explanation:

1. Workers can be exposed to hazardous materials through inhalation, ingestion, and absorption. Absorption occurs when substances pass through the skin. Osmosis is a movement of solvents across a semi - permeable membrane, radiation is energy emission, and proximity just means nearness and is not a typical exposure route.
2. Hypothermia is caused by prolonged exposure to cold, which lowers the body's core temperature. Excessive alcohol consumption can affect body temperature regulation but is not the main cause of hypothermia. Excessive sweating can lead to heat - related issues and prolonged exposure to heat causes hyperthermia.
3. Oxygen and fuel cylinders used in oxyfuel cutting must be separated by 20 feet (6.1 m) when in storage to prevent dangerous reactions.
4. Grease and oil must be kept away from oxygen tanks because grease or oil can cause oxygen to explode as they are combustible materials in the presence of high - pressure oxygen.

Answer:

1. B. absorption
2. B. prolonged exposure to cold
3. A. 20 feet (6.1 m)
4. (Incomplete option list in the original for this part, but if we assume the correct reason is about explosion risk, the closest correct concept among the given partial options would be related to the combustibility and reaction with oxygen)