The_stairs_which_are_kept_in_motion_by_a_revolving_drum_is_known_as_a_ – McqOptions

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1.	The_stairs_which_are_kept_in_motion_by_a_revolving_drum_is_known_as_a________$
A.	Escalator
B.	Revolving Stairs
C.	Lift
D.	Elevator
Answer» B. Revolving Stairs

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