Which of the following should be done to enhance the life of machines? *
Machines should be oiled or greased regularly
Machines should be kept covered to protect them from dust.
Parts made of iron should be painted.
All of the above
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Which of the following should be done to enhance the life of machines? *
Machines should be oiled or greased regularly
Machines should be kept covered to protect them from dust.
Parts made of iron should be painted.
All of the above
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Answer:
1
Explanation:
because of prevent of rusting and reduce friction