Question

q3: general safety precautions when working with refrigerant include: do not mix with other refrigerants do not expose refrigerant to freezing temperatures do not filter with other refrigerants do not expose refrigerant to high temperatures

Explanation:

Refrigerants can be reactive or decompose under high - temperature conditions, which may lead to safety hazards such as leaks or the release of harmful substances. Mixing refrigerants can change their properties and cause system failures, but the most general and important safety precaution here is related to temperature. Refrigerants are not affected by freezing temperatures in a way that is a major general safety concern compared to high - temperature exposure. Filtering with other refrigerants is not a common general safety precaution statement.

Answer:

do not expose refrigerant to high temperatures