Final answer:
Three normal uses of the MC-7 air compressor are scuba diving, hospitals, and welding.
Step-by-step explanation:
Three normal uses of the MC-7 air compressor are:
- Scuba diving: Compressed air is used by scuba divers to breathe underwater. The MC-7 air compressor provides the necessary compressed air for divers.
- Hospitals: Compressed gases, such as oxygen and anesthesia, are frequently used in hospitals for various medical procedures to assist patients with their breathing or for administering anesthesia during surgeries.
- Welding: Welding requires high-temperature flames produced by compressed gas mixtures like acetylene and oxygen. The MC-7 air compressor can provide the compressed gas needed for welding processes.