An efficient seal is normally obtained between the upper and lower halves of a turbine casing by __________.
Official USCG Answer & Rule Citation
Correct Answer: Option C — precision metal-to-metal contact
In USCG Steam Plants (Boilers & Turbines), regarding 'An efficient seal is normally obtained between the upper and lower halves of a turbine casing by', the verified engineering fact is: 'precision metal-to- metal contact'.
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