____________________ points for all instruments should be established to give the technician confidence.
Fill in the blank(s) with the appropriate word(s).
Reference
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Which of the following backflow prevention methods is approved for all hazards?
a. air gap b. atmospheric-type vacuum breaker c. double-check valve assembly d. pressure-type vacuum breaker
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70 as a 5211 code number is ____________________.
Fill in the blank(s) with the appropriate word(s).
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Relays cannot be used to open and close a control circuit.
Answer the following statement true (T) or false (F)
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If an overapplication of fertilizer occurs, __________ is recommended
Fill in the blank(s) with correct word
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