I certainly wasn't expecting a DC-8 at this museum.  I recall seeing this exact aircraft operating into Bahrain as an eye hospital.  I think they now use an ex-Laker DC-10.
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<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/130275500@N02/25871849003/">Orbis DC-8 N220RB, beijing Aviatoin Museum</a>