____ used at the end of a metal duct run will help reduce any noise that may be traveling through the duct.
A. Fiberglass ductboard
B. Aluminum duct
C. Insulated metal duct
D. Flexible duct
Answer: D
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In a pressure type of flame sensor, a ____-filled bulb is located in the pilot flame.
a. solvent b. mercury c. refrigerant d. solution
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Allowable variations in basic dimensions are established by tolerances in the feature control frame.
Answer the following statement true (T) or false (F)
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Which of the following parameters is NOT used by the PLC 5 and SLC 500 timer instructions?
A) Preset value B) Timer number C) Trigger voltage D) Time base
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Which one of these areas is the water jacket?
A) A
B) B
C) C
D) D
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