Geothermal heat pumps get most of their heat from
A) the electricity used to operate the compressor B) the surrounding air
C) the ground D) a separate gas fired boiler
C
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Las EMT deben cortarse con una:
a. sierra de arco. b. sierra manual. c. antorcha. d. sierra trozadora.
Match the word or phrase with its correct meaning.
A. A machine tool use for cutting external threads. B. The distance on an external thread from crest to crest through the axis. C. The centerline of the cylindrical thread shape. D. The angle between the flanks (sides) of the thread. E. An angular relief at the last thread. F. ...used to make a hole in material before tapping. G. The bottom of external and top of internal threads. H. The distance between the crest and the root of the thread, perpendicular to the axis. I. The top of the external and bottom of the internal threads. J. A thread that engages with the mating thread by rotating clockwise. K. The distance measured parallel to the axis from a point on one thread to the corresponding point on the adjacent thread. L. A thread that engages with the mating thread by rotating counter-clockwise. M. The portion of the screw shaft that is left unthreaded. N. The distance from root to root through the axis for an external thread. O. A designation of the amount of tolerance and allowance specified for a thread. P. The lateral distance a thread travels during one complete rotation. Q. A machine tool use for cutting internal threads. R. The part of a screw thread represented by one pitch.
Match the type of industrial process that is used in the following manufacturing application examples.
A. making paper from wood pulp B. a robot welding an automobile frame C. mixing ingredients in a soft drink factory
An aluminum alloy piston expands 0.00087 inch in diameter when heated. The standard size is 3.8945 inches in diameter. What is its size after expansion?
A. 3.89466 B. 3.89484 C. 3.89511 D. 3.89537