GIVE REASON 1RAMP USED IN HOSPITALS TO CARRY PATIENTS ON SYRECHER INSTEAD OF STAIRS 2. CARPENTERS USE SCREW INSTEAD OF NAILS .
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Explanation:
Ramps are used in hospitals to carry patients on stretcher instead of stairs to prevent shock.
Carpenters use screw instead of nails because screw can be reopened and fit it again. Can't do that with nails
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