Science, asked by divyanshu4870, 1 year ago

e) Ball-bearings are used in machines
f) Tyres of the vehicles need to be changed regularly
g)Machines parts are frequently oiled or greased.

Answers

Answered by pooja9801359785

0

Answer:

Ball bearing is used in mashine and other heavy vercils

Answered by shivamkumar8914

0

Answer:

Machines parts are frequently oiled or greased

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