If you suspect corrupted system files are causing issues, what command can be run to search for and replace the corrupted files?

Suppose an astronomer discovers a large, spherical-shaped body orbiting the sun. the body is composed mostly of rock, and there are no other bodies sharing its orbit. what is the best way to categorize this body? a. planet b. moon c. comet d. asteroid

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What engine component is shown in the above figure?