The device shown in the illustration is commonly used to __________? GS-0120
Official USCG Answer & Rule Citation
Correct Answer: Option C — compress air
The illustration depicts a reciprocating piston-type air compressor, characterized by cylinders, pistons, and valve assemblies. These machines are standard equipment on vessels for providing compressed air for starting main engines, operating pneumatic tools, and supplying control systems. Their mechanical design is specifically engineered to increase the pressure of an air charge.
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