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HOTmike HOTmike
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6 years ago
To “exercise” a valve is to:

a.   thoroughly clean it.

b.   fully open and close it.

c.   carefully lubricate it.

d.   replace it with a new one.
Textbook 
Hospitality Facilities Management and Design

Hospitality Facilities Management and Design


Edition: 4th
Authors:
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EleglinEleglin
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6 years ago
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