Engine : Motor Plants and Auxiliary Boilers - 604/947
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| Ethylene glycol, when used as a coolant in a closed cooling system for a diesel engine, is more advantageous than untreated raw water because it __________. |
| A) has a lower freezing point and higher boiling point |
| B) provides a constant pH below 7 |
| C) provides better vapor-phase cooling |
| D) has a higher freezing point and a lower boiling point |
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