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#1998
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Engine: Motor Plants and Auxiliary Boilers

Question 1,998 of 1,433

When operating the HFO purifiers in "parallel", as shown in the illustration, what is the label of the valve that should be closed?

USCG illustration MO-0077 for Engine Motor Plants and Auxiliary Boilers question 1998
Illustration MO-0077
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Appears on the 2026 sample exam for

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