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2. Chairlift - Wikipedia

   en.wikipedia.org/wiki/Chairlift

   The capacity of a lift is constrained by the motive power (prime mover), the rope speed, the carrier spacing, the vertical displacement, and the number of carriers on the rope (a function of the rope length). Human passengers can load only so quickly until loading efficiency decreases; usually an interval of at least five seconds is needed.

3. Medium Tactical Vehicle Replacement - Wikipedia

   en.wikipedia.org/wiki/Medium_Tactical_Vehicle...

   The Medium Tactical Vehicle Replacement (MTVR) is a series of vehicles used by the U.S. Marines. [1] [9] The first MTVRs were delivered in late 1999.The MTVR is the equivalent of the U.S. Army's Family of Medium Tactical Vehicles (FMTV); the Marines do not use the FMTV (with the exception of the FMTV-based HIMARS) and the Army does not use the MTVR.

4. Wheelchair lift - Wikipedia

   en.wikipedia.org/wiki/Wheelchair_lift

   A wheelchair lift in the front door of a TriMet bus in Portland, Oregon, in 2010 A bus in Prague with wheelchair lift extended, 2006. A wheelchair lift, also known as a platform lift, or vertical platform lift, is a fully powered device designed to raise a wheelchair and its occupant in order to overcome a step or similar vertical barrier.

5. Manhole cover - Wikipedia

   en.wikipedia.org/wiki/Manhole_cover

   A round manhole and its cover. A manhole cover is a removable plate forming the lid over the opening of a manhole, an opening large enough for a person to pass through that is used as an access point for an underground vault or pipe. It is designed to prevent anyone or anything from falling in, and to keep out unauthorized persons and material.