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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