Question

The proper care and maintenance of Machines required -
a) to make them good looking
b) for preserving them for future
c) for their efficient and longer use
d) All of these​

Answer 1

Explanation:

for their efficient and longer use

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Answer 2

Answer:

Stay on top of large machinery operator training. ...

Add and test lubricants frequently. ...

Check for signs of wear. ...

Keep large machinery clean, and maintain a clean environment. ...

Have a maintenance and repair schedule, and keep good records