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131painting, Western — ▪ art Introduction history of Western painting from its beginnings in prehistoric times to the present. Painting, the execution of forms and shapes on a surface by means of pigment (but see also drawing for discussion of depictions in …
132Reversing valve — A reversing valve removed from an HVAC heat pump for replacement. A reversing valve a type of valve and is a component in a heat pump, that changes the direction of refrigerant flow.[1][2] …
