Engine_2014 : Motor Plants and Auxiliary Boilers - 188/2614
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| An examination of the piston compression rings of an efficiently operating diesel engine, should appear with a __________. |
| A) shiny face and bottom, black back and top |
| B) shiny face, black top, back and bottom |
| C) shiny face, bottom, back and top |
| D) black face, bottom, back and top |
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